That's true but I think the pharmaceutical industry is an exception due to all the regulation. If it were possible to market drugs in 5 years instead of 10 most companies would focus on the 5 year drugs. With a 10 year drug there is a lot of uncertainty and is a reason there has been a lot of mergers in the pharmaceutical industry over the past few decades. A big company will contribute a sales force to sell the smaller company's products and then will just acquire them if things are going well.
