People are more or less paid for what they produce, how much time they spend at it is immaterial. (Despite ostensibly being paid by the hour, the rate is based on the expected value they'll produce in that time.) The idea of pay for time is the Labor Theory of Value, and is discredited.
That's hardly a disappointment. A plumber who takes 4 days to fix my problem is a worse plumber than one who takes an hour. I can't imagine paying the first guy more.