Remember when they haven't shipped a web browser in Windows 95 and then they turned around and produced a kickass browser that killed Netscape Navigator? Or how MS Word took marketshare from WordPerfect like taking candy from a baby? Or how Win 95 won against IBM's OS/2, even though OS/2 was also binary compatible with DOS and Win3.11?
Gates used to be that guy. He doesn't care anymore. He's involved in something greater than even what MS was. Under current conditions, I'm not even sure that Gates could even do what he once did but he would drive a shot into the company and the perception of it.
There's no question Gates was as much of a skilled tactician more than a coder (which he was great at when he did it) but, while I'm sure he still loves MS, he is a man in the real world looking for a cause to drive him. MS is in the past.
I can't blame him. A good woman changes you and that's what Melinda did.