Ideas are like sand at an ocean beach. But paths to a working implementation are rare. And by now mined by great companies with patent lawyers, to prevent disruption.

If you are big and successful, new ideas are the poison.The only vector for new idea implementations to make it big, is other behemoths want to eat old behemoths. Apple/Android eating Kodak.

The individual does rarely factor into that. Unless s/he knows how to move giants into funny game constellations. Which becomes ever less likely, as most giants today are owned by pension funds, who prefer stability over change.

Contrary what the propaganda tells us, nobody wants ideas, nobody wants change, not even those trying to emulate market capitalism to prevent political backlash. Which makes ideas worse then worthless. Its something the "No-Future"-coporate-cartel will come down upon you for.