Crypto won't challenge cash's throne. CBDCs will do that. Heck, crypto will be outlawed by many countries once central banks start rolling digital currencies of their own. All in an attempt to force people to use the new Fiat money system.
goodluck to them forcing this upon people they would not want to use coins issued by cbdcs in replacement of crypto what can the government do if they do not use their coins? the worst they can do is to punish those who will use cryptocurrencies not issued by them
Bitcoin will continue to be regulated to a point where you won't be able to use it as "digital cash". Buying and selling of BTC will be made mandatory through centralized exchanges.
i hope not it does seem like a lot of countries do not care as much if you buy it thru centralized or decentralized platforms because they like bitcoin right now