I think it is impossible. Because there are huge hidden dangers in the network, I think it is impossible for the government to keep the economy on the Internet. They may issue tokens, but they may only be used for some kind of commemoration!
It looks like you don't even understand what's already talked by OP. it's about the possibility to merge the altcoin into one coin that will be brought by the economic someday, and in my understanding it' impossible because every asset represented its company share, I meant to look at how so many altcoins has a different purpose from one to each other and it can't be merged.