An equally terse generalization: You're trading your labor for money. Your time is marginally valuable.

It's often about time instead labor for those not self-employed though.

Time has a universal ceiling for us humans and is the ultimate boundary

In nature, everything is free.

If you're an engineer here, you'll find something there, too.

Can you elaborate please?

On your own, you only have 1 person's time to trade for money, but once you employ others you have a multiplier.

In other words, you're the sucker if you're not exploiting others.

What is your solution go back to a barter system?

No, he's saying "run a company", essentially.

but running things yourself means networking and financial risk. not everyone is good at that or can afford it