What you are saying applies to a lot of companies. Most companies in fact are essentially only self-serving, and if we're talking about open source contributions I can make an argument that outside of the big 3, nearly every valley company's FOSS contributions are paltry "for their size and wealth".

These firms inject capital into the economy efficiently and effectively, which then allows firms access to the financial resources to develop technologies to apply to "healthcare or general science". Can you think of a better way to accomplish this? Have the state choose? I think we all know how that turns out.