Earlier quoted context omitted.
Bitcoin didn’t regress, what actually happened is that its fundamental flaws ended up eventually dominating whatever early enthusiasm allowed them to be ignored. It was never going to work, for a variety of reasons that were incredibly apparent at the time. “Why did it regress” is much less interesting than “why did anyone ever fall for this?”
Sure, but a lot of early technologies move laterally in some unexpected direction, and it was reasonable to expect blockchain stuff to do the same. Maybe the original idea could never fly (even in 2008 you didn't have to be a genius to see that evading financial controls would be the chief use of a working cryptocurrency). But likely someone would find a really neat twist on it and find the blockchain equivalent of V…
First, the underpinnings of Bitcoin are ideological, namely in Austrian economics. This means that any change that caused any inflation would be socially resisted.
Second, most of the issues with Bitcoin stem from the lack of a central authority to do things like chargebacks and handle conflict resolution. It is not possible to solve many of the issues of Bitcoin without a central authority, and that was not going to happen for obvious reasons.