Sales Execution Is the True Moat in an AI-First World

Lessons from Brian McCarthy on the Revenue Builders Podcast

I’ve had the privilege of working for some great leaders in my career—but Brian McCarthy ("BMac" as we call him) is in a different category.

I have a ton of respect for Brian—not just for what he accomplished as CRO here at Rubrik, but for how he operated day in and day out. I learned a tremendous amount under his leadership—around execution, accountability, focus, and what it really takes to build a high-performing revenue organization.

He taught all of us to, "Love the Work" as he would say.

So when I saw him back on the Revenue Builders with John McMahon and John Kaplan—now leading revenue at Cursor—I knew it would be worth the listen right away.

The big idea from the episode is simple—but incredibly relevant right now:

In an AI-first world, sales execution is the true moat.

Here are my key takeaways from this awesome episode...

1. Technology Is Becoming a Commodity. Execution Is Not.

AI is accelerating innovation at a pace we haven’t seen before. Features are easier to replicate, and product advantages don’t last as long as they used to. That reality is forcing a shift in where true differentiation comes from.

As Brian says, what doesn’t change—and what doesn’t get commoditized—is sales execution. The ability to understand a customer’s business, solve meaningful problems, and build trust inside complex organizations is still incredibly hard to do well.

At a practical level, this shows up in a few ways:

• Leading with the business problem, not the product

• Building real champions—not just contacts

• Creating relationships that extend beyond a single deal

The takeaway Brian conveys is clear: the best sellers aren’t just product experts—they’re operators inside the customer’s business.

“Technology right now in this space is easily swappable… what’s not is solving business problems and building trusted relationships.” - Brian McCarthy

2. Execution Is the Only Scalable Moat in an AI + PLG World

What Brian quickly learned at Cursor is that AI and product-led growth can generate enormous demand almost overnight. Unlike at Rubrik—where PLG isn't a core go-to-market motion—this was a new dynamic he had to adapt to fast. What became clear right away: pipeline is easier than ever to generate, but much harder to convert consistently.

That’s where execution becomes the separator.

Brian believes that the teams that will win in this AI-era are the ones that bring discipline to the process:

• Clear qualification standards (what’s real vs. noise)

• Consistent deal progression

• Strong operating cadence across the team

• Accountability at every level

This isn’t about doing more—it’s about doing the right things, consistently. That’s what scales. That’s what builds predictable revenue. And it’s exactly what Brian built during Rubrik’s growth and is looking to replicate at Cursor.

“The hallmark of great leadership… a job well done means the job is done.”

3. When Growth Breaks the System

One of the most interesting—and counterintuitive—points from the episode is that too much demand can actually hurt you.

PLG and AI can flood your funnel with opportunities. But if your system isn’t designed to handle that volume, things start to break:

• Response times slow down

• Prioritization becomes unclear

• Customer experience suffers

• Teams get stretched too thin

  
  

Growth doesn’t fix execution problems—it exposes them.

Brian emphasizes that the best organizations must recognize this early and build accordingly. They need to prioritize focus, align capacity to demand, and ensure that the customer experience doesn’t degrade as the business scales.

“More demand doesn’t fix your system… it exposes it.”

4. Radical Focus: Fewer Accounts, Better Outcomes

One of the most tactical takeaways from Brian is the idea of reducing account load to improve performance.

It’s simple, but powerful. When sellers are spread across too many accounts, everything becomes surface-level—discovery, relationships, and deal progression all suffer.

When focus increases, outcomes improve:

• Deeper discovery leads to stronger positioning

• Stronger relationships lead to better internal alignment

• Better alignment leads to faster deal movement

This is really about shifting from activity to impact. It’s not about how many accounts you touch—it’s about how well you execute within the ones that matter.

“Focus drives execution. Execution drives outcomes.”

5. Champions Drive Revenue—Not Features

In today’s market, product alone isn’t enough to win deals.

The real question is: Who is driving this internally when you’re not in the room?

That’s your champion.

Strong execution means:

• Identifying the right champion early

• Building belief in both the problem and the solution

• Equipping them to align stakeholders and push the deal forward

Without a champion, deals tend to stall. With a strong one, momentum builds even when you’re not there.

“Revenue doesn’t come from features. It comes from people inside the account who believe in what you’re doing.”

6. Seller “Clock Speed” Is the New Advantage

One of the more modern concepts Brian introduced is “clock speed”—how quickly a seller can learn, adapt, and move.

In a fast-moving, AI-driven environment, this becomes a real differentiator.

Top performers:

• Shorten their feedback loops

• Learn from every interaction

• Continuously refine their approach

• Move deals forward with urgency and precision

Execution today isn’t just about doing the right things—it’s about doing them faster and better over time.

“The best sellers don’t just work harder… they operate faster.”

7. AI Changes the Game—But Not the Fundamentals

Brian is now leading revenue at an AI company, so his perspective here carries weight.

AI will absolutely change how we work.

It will:

• Increase productivity

• Improve insights

• Accelerate workflows

But it won’t replace what actually drives success:

• Trust

• Relationships

• Judgment

• Execution discipline

If anything, AI raises the bar. The teams that win will be the ones that combine strong fundamentals with smart use of these new tools.

“AI will change how we work. It won’t change what makes us effective.”

Final Thoughts

One of the biggest things I took away from working with BMac—and hearing it reinforced again in this episode—is this:

Great companies aren’t built on moments. They’re built on consistency.

Consistency in:

• Execution

• Focus

• Accountability

• How you show up for customers

AI will continue to evolve. The market will continue to shift. But the sales teams that win will be the ones that stay grounded in the fundamentals and execute at a high level, every single day.

"Love the Work" - BMac