They are innovative at first, then use their patents to secure a place in the market at the expense of the consumer.
And then they are replaced by more innovative other companies.
Nokia used to be the top of the world for mobile phones. Now Apple is.
How did apple do it? Via Patents? No. By innovating the iPhone.
Claiming that the biggest companies are all non-innovative is just once again showing that you come up with an idea and then stick with it despite all evidence showing you clearly that you are wrong. And it's pretty tiring.