> If they thought there was no risk of someone stealing the idea
I didn't say that. In fact, I said the opposite - they acknowledge there is a risk in someone stealing the advantage of being first to market, irrespective of the idea itself.
Being first to market on a mediocre idea with good execution is an order of magnitude better than being fifth to market on a great idea with good execution.
I am not so sure being first with a mediocre idea is better than coming to market latter with a great idea. Mediocre ideas increase the chance of failure, but more importanty no idea that is being executed on by four others before you is a truely good idea.