Marc Hedlund, in an excellent post mortem on his blog titled "Why Wesabe Lost to Mint." Emphasis mine.

You’ll hear a lot about why company A won and company B lost in any market, and in my experience, a lot of the theories thrown about – even or especially by the participants – are utter crap. A domain name doesn’t win you a market; launching second or fifth or tenth doesn’t lose you a market. You can’t blame your competitors or your board or the lack of or excess of investment. Focus on what really matters: making users happy with your product as quickly as you can, and helping them as much as you can after that. If you do those better than anyone else out there you’ll win.