Opinions expressed by Entrepreneur contributors are their own. Key Takeaways Acquisitions rarely fail because of what was modeled. They fail because of what quietly fractures in the first 90 days. Subtle breakdowns — in decision velocity, financial clarity, talent anxiety, customer experience and more — compound quickly and erode value before anyone names the problem. If trust holds across every relationship (buyer/founder, leadership/team, company/customer, etc.), operational issues are solvable. If trust erodes, even strong financials become fragile. By the time an acquisition closes, everyone is exhausted. The model has been built. The diligence room has been combed through. Lawyers have negotiated every definition. The board deck has been presented multiple times. The capital has moved. And then the real work begins. Acquisitions rarely fail because of what was modeled. They fail because of what quietly fractures in the first 90 days. Not dramatic collapses. Not catastrophic surprises.…