

There is no paradox. Thing exists. Billionaire takes over thing. Billionaire ruins thing. Billionaire did not cause thing to exist.
You said these things “wouldn’t be possible” and “wouldn’t exist” without billionaires. This is objectively untrue. Without billionaires these things would be significantly better. I specifically pointed out your mention of infrastructure because that one’s so blatantly obvious unless you’ve only ever experienced car-centric infrastructure.

No, I’m arguing against direct quotes from you. Unless you yourself are a strawman.
Built by academics to share research, expanded by hobbyists and enthusiasts, and taken over by megacorps. Not “enabled” by billionaires.
Technically true, but only in that billionaires own the workers.
Untrue. People can live in comfort without the existence of billionaires.
Untrue. This is what your taxes pay for. Transit infrastructure exists without billionaires. Even in the US, notoriously a horrible place to travel, public transit infrastructure was good until billionaires lobbied against good infrastructure so they could sell more cars. Car infrastructure costs you more than public transit.
Possibly true in very specific cases where your work provides value only to billionaires. If your work provides value in any other way (eg providing services or goods), this is likely not true.
I am fully certain you don’t really believe good food only exists because of billionaires. Has there ever been a civilization of any kind which hasn’t had chefs of some description?
Hobbies have always existed. You have time and resources to spare because of unions, not billionaires.
You credited all of these things to billionaires. None of these things exist because of billionaires.