Wow, never thought about this. That’s an obvious and terrifying monetization model. Pay to always have GPT speak well of your company. Pay to appear more frequently in certain contexts.
If we couldn't tell that it was cheaper to use renewable over fossil fuels or eat chicken over beef as two examples there could be big efficiency and allocation problems.
AIs with total surveillance perhaps? Would need weather-control too or giant surpluses squirreled away in a distributed fashion.
Some kind of ascetic commune, but at global scale? Might work in a military setup when fighting the alien invasion.