I hope it does work out for the original author and he deserves it but there have been cases before where concepts have been taken from their originator and implemented by the large corporate with no cash or even credit given.
I always felt that there was more to that story than what was reported. My understanding is they reached out to him to interview for a PM role to develop an official "AppGet" at Microsoft but, for whatever reason, he didn't get the job. Maybe the interviews didn't go well? Maybe there were some red flags somewhere? Who knows. But it didn't really sound to me like they acted in bad faith.
Interesting, the story I've heard from various Senior Engineers is that Microsoft poached him by offering him a ton of money. Crazy to think they all repeated a tech urban legend I guess