Have you seen this work in practice, do you have any examples to share?
It’s hard to take seriously at face value for two reasons: 1- generally speaking it might undermine the acquisition in the first place since acquirers and investors and boards tend to like private potentially patentable IP, or at the very least proprietary code. 2- More importantly using your software after an acquisition-as-shutdown to compete with the acquirer is almost certainly a recipe for legal trouble. This seems unlikely to get that far since the acquiring co probably would have vetted the software and also had the acquiree sign a non-compete. Either way, if the intent was to shutdown the software, and if the acquiree was paid for their business, there isn’t a good way to “mitigate the risks”, the deed is already done. If you want to avoid the risk of shutdown, don’t take the deal. When you do see open source software as having any ability to change that equation?