The answer is, Bitcoin will become just another traditional system of making transactions. Absolutely no difference from the already existing form of money, only that this time it is digital money. You need to understand that Bitcoin was not adopted because it is a digital form of money. Remember, before Bitcoin existed, there was a digital currency that tried but failed. It failed because it did not solve the problem of centralisation. If Bitcoin were centralised, I could beat my chest to say the technology would have crashed then.
Yes, and in this case "traditional" means, "connected to the
mainstream of investor wallets, i.e. 100x bigger than it is now. That sounds... kinda good if you are sitting on a lot of BTC

.
But you are right, Bitcoin needed to be technically decentralized when it started because digital currencies were illegal back then. Bitcoin would have not made it if the ownership of the system could be traced back to just a few easily identified entities....
back then.
But today--and mostly thanks to Bitcoin--digital currencies are effectively
legal everywhere, and there are many major products out there (many doing 100x more volume than Bitcoin) that have a more centralized architecture, and they are not being attacked by any government in any serious way.
In short, Bitcoin actually... made itself obsolete (from a technical standpoint).
[...]
True financial sovereignty can only be enjoyed through self custody and with use of decentralized tools, but as long as market is filled with number go up or make it go up greed and are using decentralized tools, original vision of Bitcoin will continue to be ignored by masses.
[I assume the poster mean "centralized' here]
Bitcoin has demonstrated that the demand for a truly clandestine tool for hiding one's money from their government is an
extremely small audience. If Bitcoin truly limited itself to those people, BTC would probably still be trading at $.05 per coin.
The masses want and/or need two things:
1. A fast (milliseconds fast), very cheap (viz. free), means of doing online value transfers.
2. An investment they can later sell for more.
Bitcoin cannot do #1 because of architectural limitations unless it made the changes I talked about in the OP.
Bitcoin does do #2, which is why it's the way it's mostly used today.