If Bitcoin is an experiment aimed at consolidating the value of all assets, and if, ultimately, Bitcoin becomes the world's only valuable asset—with the value of all other assets dropping to zero—then its market cap would reach approximately one quadrillion US dollars, corresponding to the total value of all current assets.
If everything in the world, stocks, real estate, funds, bonds are worthless....
What would you do with BTC anyhow, since it cost zero to buy all of Nvidia?
If all other things will drop to zero Bitcoin will do so also, there is nothing magical about it that can hold value while everything is going down, deflation is a curse for every single assets, nobody would be buying something when everything gets cheaper.
This whole thing is contrary to what Bitcoin is designed to do, in this case, you're just printing value out of nowhere.