This is incorrect, or rather it is incorrect that it is different from the Proof of Work example, so it should be discarded from the analysis.
Scenario 1) I work a paper route to purchase ASICs and electricity to bootstrap my mining business. The world got paper delivery out of me, and consumed some strained silicon and electricity for mining, which raised the costs of electricity and mining for other uses.
Scenario 2) I work a paper route to earn ETH to validate. The world is the same as in Scenario 1, but the strained silicon, fab time, expertise, electricity, etc. all went to work on other projects instead of mining equipment, leaving the world slightly richer. (Perhaps a startup was able to purchase microcontrollers for their new widget at slightly lower cost, improving the return on investment for their founders.)
Again, from a miner/validator perspective, PoW and PoS are the same, but from a global perspective, they are not.