Nope. You (and most libertarian/capitalist cheerleaders, to be fair) whooshed on a classic scenario: Microsoft has no reason to innovate when they're a monopoly. It gets worse. Startup X (you like startups, right?) has a brilliant idea that they bring to market, only for Microsoft to buy them out and kill the idea. Startup Y has a brilliant idea, but they get smarter, they don't sell, and then Microsoft copies their tech and outcompetes them with their war chest. Then they kill the technology. Startup Z has a brilliant idea, but they get even smarter and never bother bringing it to market because Microsoft will just kill it.
Go capitalism.