I am not as knowledgable as you, my friend, but with every country starts regulating bitcoin (and probably ban some other, unsafe, cryptocurrencies), bitcoin and some other cryptos will reach a status as hard currencies. Thus, willing or not, the other cryptos will be pegged to bitcoin (like many countries are now pegged to USD).

I foresee some sort of a "United Nations of Bitcoin" or "International Monetary Fund of Bitcoin" or "World Bank of Bitcoin" --international bodies to regulate bitcoin ownership and distribution, which is politically enforced for national security issues. So, yeah, that could be the only utility that bitcoin have in the future. This is way beyond Satoshi's original idea of the blockchain --a decentralized bank and empowered citizen-- but governments still have the rule, otherwise there will be chaos.