After Facebook announced it's Libra digital currency, several countries have expressed their interest of launching a digital currency of their own. China has already announced that it'll be working on Blockchain technology for a digital version of the Chinese Yuan while other countries have done the same.
In the next five years we will see many countries launching their digital currencies and it will be another shit storm battle and the weakest one dies off, if people need to purchase those they need to implement a regulation so that you could purchase products with the digital coins and if they regulate bitcoin then they will be able to use it to purchase bitcoin and the decentralized market with those centralized coins.