It wasn't about how locked down the PC was but how IBM had such total control over the market. Once there's a monopoly, it will halt progress. As the other guy already said, Steve Jobs NEVER liked customizable systems and didn't care about "user choice".
He was right in many ways, but he went a little far sometimes. The other Apple people moderated him. And yes, I have read the biography; what the other poster said is 100% true.
P.S. Thanks to Steve Jobs, Flash is nearly dead. It always sucked and got worse with every update.
What do you wish me to say "Well Flash outlived the person who hated it?"
Point being Flash was never an issue on PC's
I and millions upon millions of PC users were happy with flash, no issue at all, minimal CPU load, animations, online games.
Steve (and the crew) stopped Flash having access to any parts of their machine that would make it run as great as it did on a PC, plus of course he wanted to kill it also so he could make money from, then similar quality little games on his app store.
Again, awkwardness, ignorance, pig headedness and greed.
Thank god he's gone, and hopefully in time the computing industry from the damage he's done.