I wish people would stop saying that Bill Gates has always been a nice guy because he's retired and giving away his money.
Don't fool yourself into thinking that MS is more open, they don't have much of a mobile OS for you to compare with iOS anyways.
And Apple is going to kill off so many hardware companies because if it wins like Windows, it's going to be the sole arbitrator of who gets to build hardware for it.
All MS wanted was for you to pay the Windows tax. Apple wants to control the hardware as well. Eg. Windows Phone 7 is a OS that various OEMs can run on different devices. iOS is basically just firmware for Apple's devices.
It may be hard to appreciate today, but in the 90's you couldn't start a software company without a ready answer for how you were going to survive if MS decided they had to kill your product to protect the Windows monopoly.
I don't think anyone claimed that Apple's e.g. censoring porn is the same kind as Microsoft murdering competition and slowing down development.
For porn -- relax, much online video works on the iPad. :-)
I would argue almost all areas is better with competition. If you prefer monopoly solutions, there is still North Korea (Cuba will go a bit capitalism, I've seen).
Compare a Mac with windows, instead.