Silicon Valley VC and Benchmark Capital partner Bill Gurley has been calling a bubble for a couple of years now. Gurley explains why he is so concerned with bubbles in his latest interview to Technology Review magazine: Great entrepreneurs are relatively disadvantaged in these markets where so much capital is available. In a market where capital is hard to come by, they can still raise money. In this market, they can raise a ton of money, but so can a lot of [less capable] competitors that wouldn’t be in business otherwise. ...Imagine two companies. One is told, “I want you to get to $100 million in revenue and you have to be profitable when you get there.” The other is told, “I want you to get to $100 million in revenue and I don’t care if you lose $40 million getting there.” Which of those two exercises is harder, and by how much? I would argue it’s at least 10 times harder to do the first. Until you can prove that you can generate cash flow, you don’t have a sustainable b...