I've always had trouble with PG's "proof" that ideas are worthless. Selling ideas doesn't work because to demonstrate that they are worth selling, you have to

I've always had trouble with PG's "proof" that ideas are worthless. Selling ideas doesn't work because to demonstrate that they are worth selling, you have to give them away. There are plenty of people who get paid a ton of money for ideas-- simply by having demonstrated a good track record of ideas in the past. Authors and speakers (Seth Godin, for example) get paid piles of money for ideas that come with zero execution.