The thing is you're calculating like the whole people used all his money only to buy Bitcoin, this is why your calculation are inaccurate.
I think S2F models are could give you an idea how much Bitcoin will worth in the long term, though it's like impossible. But it was started from nothing to reach $20K which is no one expect it except Satoshi at that times.
Maybe if you only use 10% of the average wealth, it's more make sense.
That's definitely true. Which still leaves with 1.5 million per bitcoin if we are looking at averages. Do not get me started on the companies as well, because this is per person, if we are talking about prices based on companies, that's going to change it a lot as well. All in all, what I believe bitcoin is all about equals to no top price ever.
Because, there is inflation as well. If the average person could have 80k per year salary today, it will be 100k in a decade or so, which means that we can't talk about how bitcoin is all great and what not, while also not realizing that inflation will make sure that bitcoin will be ever growing and will never stop.