This presumes aquiring large quantities of money is a required motivation for developing new technology for one to be qualified as 'in their right mind'. To me this comes off like saying 'No one in their right mind should be a teacher and give knoweledge to others that they could use to get rich'.

Believe it or not some people enjoy the competition, the challenge of solving an interesting problem you had not previously considered, and over all advancing the technology of the world they live in far more than gaining absurd amounts of monetary wealth.