In accounting, you close the yearly ledger and create a new to which you transfer some of the values from the prevoious year.
I know this as a programmer. The company I worked for had one table for every year.
I think it s something that you could and should do with a blockchain because of how fast it grows. Before long, the blockchain will be humongous
So, at some point it should be possible to say that the cuurent blockchain van be closed and archived. A new genesis block or blocks need to be created and they should contain the balance of each address where there are coins.
There was a locked article in a magazine that mentioned that some people had come up with an idea for a blockchain that could do this. It seems like a very reasonable thing to do. Sooner or later the sheer size of some blockchains will be a very real problem.