No invention is truely innovative, not a single product on the market today is truely original. We're all influenced by the same factors and we're all trying to push the same limits in technology.
I don't have nearly the means to go to court against a company like Apple (or any company at all for that matter). If I launch my product today, I would be afraid of being successful, because I know I'll be bullied by others.
And when patent lawsuits can win you a Billion dollars, patent bullies are happy and waiting for me.
But yeah, I agree patents are a driving force behind innovation...