Business schools need to stop fostering the idea that entrepreneurs need to know their exit strategy. That line of thinking has done enough damage. Show me an entrepreneur who knows today, which company will acquire her company two or three years down the road, and you'll see an entrepreneur with too few options. Even narrowing things down to a basket of companies is going too far. I read recently of a business expecting to be sold to Yahoo, Google, MSN or AOL. That's limiting and obvious.