Traditional Finance has wielded a lot of power over lives of people for a very long time. This is because Financial institutions decided the flow of money. Who gets the cheap loans? Who gets the backing and credibility and access? Money and Value is really about access and the power to influence. Banks have a hell lot of both.
Bitcoin, blockchain and crypto in general has enabled a lot of people to have a shot at wielding that power. The information barrier is not high and it does not ask for pedigree. You don't have to be a Harvard graduate to have your plans taken seriously. If you have the ability to take an honest idea and make it work using the blockchain technology, you can easily be the next big institution. Just look at all these DeFi projects with people locking funds in their custody.
The question is are we ready for it? Do you have the capacity to engage and build access??
In my opinion there are two factors that made traditional finance so dominant over the last 50 years, knowledge and labour. Both of these two factors were fully controlled by big banks in the past. However, due the Internet and strong computers being available for almost anybody this is not the case anymore. As long as you have access to the Internet you can get the knowledge to do your own banking. We are definitely ready for decentralized finance.
Easier said than done i would say, yes the opportunity to become your own bank is more available than before but statistically speaking it is still not the same, not even close, the number of people depending on traditional financial institution to do their bidding is far more greater than those who have the technical know how with decentralize finance,
Just because the internet is available don't mean the majority are using it for purposes like the aforementioned, there is a lot to be done before this can beginning to be noticed, at present those who are using decentralize service are very little to be noticed, perhaps in latter years, but not in the immediate future.