If your product can do XYZ, and XYZ fills a need in a genuine user, then get it to market now. By the time you've finished ABC, you'll have existing users to s

If your product can do XYZ, and XYZ fills a need in a genuine user, then get it to market now. By the time you've finished ABC, you'll have existing users to sell to. Or you'll have learned things you don't right now about your market, without having sunk development time needlessly. What's the worst that could happen if you launch today?