But I don't know why you'd guess such a thing. People have companies that they deliver value with and do not have an intention to sell yet nevertheless they don

But I don't know why you'd guess such a thing. People have companies that they deliver value with and do not have an intention to sell yet nevertheless they don't use self hosted tools (in fact, doing so might a net negative as their time is valuable). So I simply don't get where this non sequitur came from. And like the other commenter said, you have an implicit assumption that those who want to sell a company haven't delivered value, well, what is the acquiring company paying for then if not value?