People have always come and gone. I would not read too much into it.
As for Microsoft "going down," I'm not sure what that is supposed to mean. I think it's fair to say that their influence is diminishing, which is a very good thing for the technology industry overall, and for consumers. The company isn't going "down" any time soon, but it will be much more difficult for them to snuff out competitors in the future.
Microsoft's misdeeds are not industry-standard. They are legendary, on a par with Standard Oil, U.S. Steel, and the other robber-barons who made antitrust laws necessary 100 years ago. They've been sued for antitrust law violations by governments on two continents, and by a long list of corporations, and they have lost virtually every time. This is not a company that behaves like all the others. They are worse, much worse.
Still, we're finally entering into a period where the answer to every question isn't Microsoft. They are struggling to compete in areas where they aren't already dominant, and seeing their leadership slip in areas where they've been dominant. Their future is less than clear.