Is 'Web 2.0' Another Bubble? - WSJ.com

"Mr. Dagres begins: Web 2.0 is a bubble for 3 reasons: 1) There is far too much money chasing Web 2.0 deals. Too much money means too many companies getting funded at higher valuations. 2) There are virtually no barriers to entry in Web 2.0 and therefore the ability to develop a unique solution and sustain a competitive advantage is virtually nil. Therefore, it's difficult for Web 2.0 companies to build long term value. 3) There is very little liquidity in the market for Web 2.0 companies. The Dow was recently at a high and still no liquidity. Without liquidity, Web 2.0 companies must rely on acquisitions to achieve liquidity and this will put a lid on the potential exit options and ultimate valuations of these companies. In short, they will be playing a musical chairs game in which there are far too many players and too few chairs."