I’ve been living in two worlds lately. The first is research. Clean, structured, logical. It tells me exactly what organizations should be doing in integration. The second is operators. People who’ve done 30, 50, 150+ deals. Here’s the interesting part:
They agree. Start integration early they say, align leadership, build the playbooks and don’t forget to capture lessons learned. Make sure to treat integration like a capability. So naturally, you’d expect consistent success, but no.
Most integrations still underdeliver. Not dramatically, just quietly. Missed synergies, slow execution, talent walking out the door. So, what’s going on? We start too late… even though we know better.
Everyone says integration should start during diligence. Some say before the offer. And yet, in practice? We start right before close and call it “planning.”
One interviewee summed it up perfectly: too late. By then, you’re not planning. You’re reacting.
And that’s where “integration debt” creeps in; problems you could have avoided, now costing you time, money, and credibility.
We overbuild the deal… and underserve the integration. We know that deal execution is a machine. And integration is… vibes and good intentions on a positive day.
The research shows a clear imbalance; organizations have mastered the transaction, but not what comes after. We pour resources into getting the deal done, then hand integration to already stretched teams and hope for the best. That’s not a strategy. That’s wishful thinking.
We say “capability”… but operate like It’s a one-off. This one is my favourite contradictions. Everyone talks about integration as a repeatable capability.
But then:
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New approach every deal
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New leaders every deal
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No real codification
As one operator put it: “They should be writing things down. I don’t see a lot of that.” Without documentation, there’s no learning. Without learning, there’s no repeatability. Just experience… that walks out the door.
Accountability quietly ends at close. Before close, everything is urgent. After close… not so much.
Integration gets handed off, priorities shift, and leadership attention moves on. One insight that stuck with me: tie executive compensation to integration outcomes. Because right now, in many cases, it isn’t, and people tend to focus on what gets measured.
Here’s the part no one loves to admit, execution is where it actually breaks. Most integrations don’t fail because the strategy was wrong. They fail because the work didn’t get done. “We didn’t get the value because we didn’t do the work.” It’s not sexy. It’s not complex. It’s consistency.
And yes… it’s still about people; we love talking about systems and synergies.
But the biggest issues?
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Talent leaving
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Founders disengaging
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Teams confused
One of the most practical insights I heard: the biggest challenge is getting ahead of rumours. Not systems. Not technology. Rumours. And we still treat that as a secondary problem.
So why do integrations fail? Because organizations behave like integration is important…
…but not critical.
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They start too late.
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They under-resourced it.
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They rely on individuals, not systems.
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They move on too quickly.
And then value quietly leaks out over the next 12–24 months.
I went into this expecting to find gaps in knowledge. There aren’t many. The real gap is discipline. We already know what works. We just don’t do it consistently enough for it to matter.
