there are many country in this world is Governmentally accepted The Cryptocurrencies, like japan accepting Bitcoin as legal tender.
Also there are some country who did not accept The Cryptocurrencies and has strict law about Cryptocurrencies, like Bangladesh.
so here are some good info about this:
https://blogs.thomsonreuters.com/answerson/world-cryptocurrencies-countryI think it will be helpful for all.
i am afraid the entire internet will basically be garbaged together by cryptocurrency ads, there will be no point using the internet anymore.