The fact that you can buy a 72" tv for less than $1k now is nuts, and I assume there is no secret HBO with higher quality content only for billionaires, they still have to watch the same shit as us, and there is some good stuff out there, even on Netflix (maybe not a lot, not anymore). Even rich people sometimes want to sit at home and just watch TV, it takes a lot of energy to go out to something every night, even if you can. I used to go to concerts every week, sometimes several, now it's far less as I get older and it becomes more draining. Box seats are not very good seats and if you get good seats you are still surrounded by other people that will ruin your time.
I'm not rich, but there isn't much that I covet from rich people, because they really don't get that much better shit than we do anymore, they get more "luxury" and convenience and opportunity, but they still have the same technology as us, and it still sucks. 20 years ago, they had things we would want and could never afford, now the gap has shrunk considerably. They can pay 100-1000x for 1-5% quality gain on what a regular consumer can buy.