Yes he could. It's called 'Patenting the right-click and double-click'. AKA Corporate Ways of Taking More Money.
And Windows is more modable and useful to the gaming communtiy so I prefer it to the rigid Mac. That and I can upgrade my PC with hand gadgets and gizmos more easily! (Being a Computer Tech student you learn to make fun stuff )
Apple is good at dummy-proofing things. They also invented the colour white.
Windows is good if you want to do more than Photoshop and iTunes.
Linux is good if you want to run a webserver, or are cheap.