No. It was to persuade future politicians not to redistribute his and his friends wealth.
Sure, some folks are going to be fantastically wealthy, that's OK to a large extent.
But, we're on the precipice of trillionaire's existing in a country where literally half of the population is functionally illiterate (yes, that's the USA), where the middle class is dissolving, and where we are approaching a feudal level wealth inequality-- and all this stuff is accelerating.
I mean, I guess it's not that bad. We still have a democracy. It's not like we have billionaires re-arranging political power and public resources for their pleasure and benefit. Oh wait, we do!
I wasn't there at the time, so I could be wrong. But I feel like their robber baron counterparts 100 years ago knew that they were hated and had some idea of why. And that's why they spent so much money on parks and buildings and colleges and everything else. They could see option B was the masses coming across their lawn with sharp implements.
You should read that as a self-preservation technique. The eager use of a strawman tells us PG heard AOC's words as an attack against him personally, his business, and his friends.
So the essay is not a reasoned retort but more an emotional self-defense to soothe a bruised ego. It's to assure himself that no -- in fact he did earn his wealth fair and square, and to imply otherwise shows a lack of understanding of how this all works. But I do love this essay because it does show just how emotional and irrational billionaires can be when their wealth and egos are threatened.