Slowly but surely fade into irrelevancy(but not total irrelevancy, because DN markets still use it).
Or genuine, completely legal places like grocery stores. Unless you suspect groceries are somehow avoiding taxes. I don't know about that, tbh!
How are you able to pay your groceries with XMR by the way? I doubt any grocery store natively accepts XMR(except a few here and there).
None directly accepts it, but you can acquire gift cards online, and a handful of places offer them in exchange for cryptocurrency. One example is FreshToHome.
No disrespect to Satoshi but Bitcoin will be whatever people want to use it for
I believe we all agree that for us to possess the liberty to utilize it as we see fit, it must primarily function as peer-to-peer cash, even if the majority would still prefer using traditional fiat currencies for transactions. To put it this way. If you can't do peer-to-peer transactions, then it lacks the essential characteristic of being a reliable store of value and, to a large extent, ceases to be considered an investment.