probably cryptocurrencies will become more centralized
But if Cryptocurrencies become more centralized, that will kill the idea of it, Cryptocurrencies are decentralize and will stay decentralize other wise thier will be no diffrents between it and the real money.
I don't think decentralisation as being the main point of cryptocurrencies.
You can have centralisation and still benefits of using cryptos.
Even with centralisation cryptos can be superior to fiat.
They are the benefits offered by blockchain:
- avoiding intermediary (banks),
- cheap,
- fast,
- transparency,
- privacy (which is not anonymity)
- limited amount of currency