People love the idea of being first into a market, because it offers the illusion that you won't have any competition. In the real world, by the time there's a significant market for your product you'll have plenty of competitors, all of whom had the luxury of learning from your mistakes.<p>The best markets are the ones that have been around long enough to establish a demand, but not long enough that anyone has released a definitive product yet. Think mp3 players before the iPod or search engines prior to Google.