(1) They are afraid that they will lose a huge chunk of money here if people suddenly jumps on the crypto bandwagon. They are totally eliminated as third party and that will result of billions of dollars gone from their pockets.
(2) As far as state creating crypto, it won't work in the long run. People will view this as nothing as stocks or mutual funds where the government will put heavy tax on them. Russia for example has crytporubble with over 20% tax. I don't think that people who loves crypto will buy that.
2) People trust their government in developed countries, if they don't, why would they buy the government bonds to put their money in to gain some interest? (I'm talking about average people, who usues the current governmental system mostly). There are other investors on the market who prefer stocks and other assets but there will always be a group of people who will use what the goverment tells them to use. Others will be happy with cryptos but on the long run, regulations will bring tax into crypto as well, most probably.
1) If it becomes widely used in transactions between customers and merchants, laws will have to be revised to support it. Otherwise, if the law doesnt recognize it, you might as well be using fish to buy your bread. Because fish and bitcoin would be recognized the same way. Now i do acknowledge your point, that it's hard to eliminate the 3rd party, and that's because we're still subscribed to the centralized paradigm. Lastly, even if we cant eliminate the 3rd parties in customer - merchant transactions, bankers could still be eliminated in such a way that they will no longer be necessary.