If you're socializing electricity for everyone then you can tell when usage is far outside norms and audit usage

I also don't think money is the ultimate incentive, and most people would work whether or not they needed money to survive. Sure they wouldn't work at some crappy unfulfilling job, but people would still be productive according to their idea of productivity.

Also not having people working all these useless jobs would save energy and resources.

There's lots of study on how humans respond to incentives and money and its not a straightforward relationship at all.