Why shouldn't they enjoy a first mover advantage, if they invested their money in doing the research to create an entire market? That's how capitalism and free

Why shouldn't they enjoy a first mover advantage, if they invested their money in doing the research to create an entire market? That's how capitalism and free markets are supposed to work: those who take the risk get to reap the rewards. Not some big company that waits to see whether the startup's idea pans out, then jumps in with a hundred engineers and millions of dollars and a huge marketing/sales apparatus to take over the market. It's easy to say "share everything" when you've never created anything others would value. Even though I'm way over on the left side of the spectrum myself, I reject that moocher ethos.