the right to use large amounts of cash is a fictional right.
By forcing the use of 3rd parties, to be able to trade, for people to sell goods they craft and create, there is an abridgement of multiple rights.
This will be overturned.
The Cold War days seem so nostalgic; it seems there was a shared camaraderie between Europeans and Americans as "Westerners", all on the same team, etc. Now as an American I feel increasingly like Europe and the U.S. are drifting apart, and policies like these are additional wedges driving the split.
Inflation will take care of that. Also, you can't convert that money to Gold or Crypto and a house is too damn expensive to buy. So someone with 20k Euros will end up with 2k euros in value.
There are many non-constitutional rights (such as this one) that are not everlasting and laws can also be adapted.
I really don't understand the value of your post as it sounds like speculation based on wrong preconditions.
Removing rights can be a good thing.
Shall we bring back the right to have slaves? Shall we bring back the right to murder those we don't like? Removing those rights from people has only made the world a better place.
As you say, rights are rights.
No. Just no.
Rights are not a for-profit balance sheet, such as when Google support provides crappy service, or ghosts you, in the name of profit.
Rights are rights. Entrenched, untouchable, everlasting. And each loss affects us all, for the next right taken, is from you.
Telling people they must use private enterprise, a third party and pay a fee, to conduct commerce between them, is a fascist act.
And guess what. 30 years from now, when that 10k is like 500, what then?
Because limits like these are never raised.