I think it's both right to check the power of the most powerful companies, and it's probably wrong to assume that their power is complete. Often, what happens is these very large companies are the ones that cause their own downfall—they trip over their own shoelaces, they don't react to something quickly enough, or they over-complicate their products.

Often, the best ideas start as super-niche things that only people with money can afford—whether it was the car, telephone, you name it.