It seems that there is a lot of blind adulation for Bill Gates in here, so I offer a dissenting view.
Under Gates Microsoft stagnated, used market position in uncompetitive ways (multiple anti trust suits), and set back the industry as a whole by years. Their current products, windows phone and windows 8 are lamentable at best and miles behind the competition both under the hood and in terms of interface. They are an ageing behemoth who is stuck in the 90's and offers little to the end user. They have flopped in the smartphone and tablet computing area, their server products are laughable, and in high performance computing they are inconsequential.
The xbox has some cool games though.







