I think Microsoft is a terrible organization and will rejoice the day they finally cease to exist as a concern, but they didn’t do anything wrong here.
PHP didn’t “rip off” Perl, nor did CoffeeScript “rip off” ruby. All the other PoW or PoS blockchains didn’t “rip off” Satoshi.
He needs to stop seeing ideas and concepts as “his” that are property that can be stolen.
Why should they acquihire when they can just reimplement?
Ideas aren’t property, and if you have a good idea, and someone else takes it and runs with it and makes software used by millions that works better than if you hadn’t had that idea, that is the system working as intended, and, ultimately, his ideas, now published and infecting the world, being writ large and used by humans.
I’m not some corporate apologist, but he should be proud. (He also probably should have, back when, started a company designed to be digestible that they could have acquired, if he wanted to participate financially, like MySQL or RedHat did.)