Bower’s argument is that the averages hiding in “most mergers fail” conceal five different activities that happen to share paperwork. Consolidating overcapacity, rolling up a fragmented geography, extending a product line or market, buying innovation instead of building it, and betting on industry convergence each succeed or fail for different reasons, reward different levels of integration, and punish buyers who import the wrong playbook. The failure mode he documents is treating them alike.
The Institute’s reading: this is the article to read the week you draft a thesis, alongside Christensen’s later refinement on this shelf. A private buyer rolling up HVAC companies and one buying a software capability are playing different games with different disciplines: the roll-up lives on integration repeatability and price discipline; the capability deal lives on retaining the people and NOT integrating too hard. Name your deal’s type in the thesis, and let the type, not habit, choose the integration depth.