well if you ask that then people can only give their opinions, because no one really knows.
I'm also curious about what will happen after all the bitcoin supplies come out.
and that too will happen in about 100 years.
so we will not know the economic development in that year.
I think it might be stable when the supply is at its maximum.
Bitcoin is delibarately deflationary, that is part of the point.
Inflationary money is a con that we have been conditioned to accept as normal. £10,000 in my parents' generation could buy you a house. £10,000 now would not even cover the deposit.
Money used to be tied to gold. It was deflationary because tied to a fixed resource. Over time money got turned into bank notes, which are essentially IOUs. A £10 note isn't £10 of money, it is a piece of paper that says I owe you £10 of money. Crucial difference. "Money" now if effectively debt. We are all moving debt around all the time; "money" has been so abstracted that it is no longer tied to any physical asset. New money can be printed at will, indefinitely. And it is printed at will. It is inflationary. It is a con.
Bitcoin is at least in part a response to this situation. The fact that bitcoin is deflationary is a solution, not a problem.