That is because IT is more on the side of 'art' and 'open creativity' than pharmaceuticals which require a lot of background knowledge, far more rigorous testing and standards, and are a much more deadly legal minefield. Both require technical skills in a way, though alot of the pharmaceutical founders barely spend any time in the actual lab. Not to mention the average cost in R&D to launch ONE pharmaceutical product is $500M, meaning you need business skill. (And a patent to earn back your research money!)