There's a lot more extrapolation of facts into a narrative from the original whistleblower post. Trying to say that licenses that were bought that never were used was bribery is just confusing. Even I have licenses for things kicking around that I never installed but intended to someday. Whole projects can get planned, licenses purchased, and then for one reason or another scrapped but the licenses (or other material from vendors) are still 'bought.' For the bribery to mean anything (or like that other commenter who tried to whip out FCPA randomly) someone has to get enriched by the experience other than the reseller selling something and paying Microsoft its share. The whistleblower post didn't do that well.
There is just not a lot of good information that was provided by the whistleblower to actually connect all of this money that he estimates at $200 million to any sort of reality. Do I think he has enough beef for a employment law retaliation case (if he was in jurisdiction US law)? Probably. Did some people commit bribes and Microsoft was fined/Microsoft fired people? Probably. Do some resellers who are external to Microsoft end up violating the FCPA or 'normal US business ethics' in some regions? Definitely. But they aren't in the US, so the right venue for whistleblowing the activity is in whatever-country-in-question under their laws. Just based on the article and whistleblower post it sounds like there is just an assumption that micro problems in his local leadership were macro problems. I am not convinced.