A surprising number of them actually. Depends on the industry but the medical industry in particular makes heavy use of iOS. I'm not saying Microsoft is going to disappear tomorrow but I think it's pretty clear that iOS is trending upwards will windows growth has flatlined and is shrinking in certain markets.

Also I'd actually argue that a ton of iOS apps are better than the desktop equivalents. Touch screen is a new paradigm that is taking us a while to truly master IMO. Also the app store has only been out 7 years so it hasn't been 10. It launched July 2008.