This ties into a question I was going to ask as a discussion item... how far "ahead of the curve" is best for startups, in terms of maximizing chances of success?<p>Obviously one can be too far ahead of the curve, and the market, and run out of cash before you can get profitable, but neither do you want to be a me-too player in a crowded market where differentiation is difficult (and the best-funded player wins).<p>Where's the sweet spot?