Your point is well stated and taken.
What I was saying is that (with the possible exception of the under-bridge dwellers AND the uber-wealthy) all these are degrees of "more" or "better" - not "none" or "exclusive" in the USA. Lots of places in the world, only the wealthy (where everyone else is "poor") have any right to all these things. That's why it's difficult to define wealthy in the USA. Few of us are excluded from any of these things based on our wealth. However, your list could probably be used as a definition of "rich" in the USA.
I agree and also point that there is rapidly diminishing benefit to higher priced "better" products. A $400-500 37" TV is not that much worse a viewing experience than $2K 60" TV, same thing with $400 computer vs $2K, a 20K Hyundai vs a $100K Mercedes, or flying coach vs 1st class, $10 vs $50 wine. The quality of most low end goods is pretty remarkable now days.
I'd argue that most of the status symbols, Rolls Royce, Rolex, $5000 50 year old wines, are actually worse than the top end of the luxury brands. For example I bet Lexus and Mercedes are actually better cars than a Rolls.
Finally, I'd argue that increasing importance of virtual goods is a great leveler. A poor kid with a used laptop and free wifi connection has the same access to all of the free information on internet, that I or Bill Gates has. Since young people by and large are pretty cavalier about paying for digital goods, this kid has the same access to books, games, movies, as a rich person. Gates and my money only buy the minor feeling of moral superiority of purchasing a digital object instead of stealing it.