Yes, but these other industries employ more people and less skilled people than the tech industry. It's also not very obvious to me that VCs are that good at pi

Yes, but these other industries employ more people and less skilled people than the tech industry. It's also not very obvious to me that VCs are that good at picking the companies with the largest overall return percentage. The performance of VC as a whole is not that good and arguably the performance of the successful name-brand VCs is due to superior access to deal flow rather than actual skill.