The reason for which Satoshi innovated bitcoin have got fulfilled, but the same to be the mainstream won't happen all of the sudden. Just think the evolution of the financial system. From barter system the technology have taken it to the cryptocurrency usage. However the fiat usage stands high against each and every form of payment being used around.
To take the position of fiat is not an easy thing. The acceptance of bitcoin is getting increased compared to the past. This shows the financial world requires more time for its complete transition.
For me, we are slowly realizing its main purpose. The adoption may not be massive but I guess such purpose is increasing day by day.
Just think of newcomers into this industry or the countries that are making btc legal tender or legal in their financial system.
You have seen that there are countries that are willing to accept btc in their payment system, it means, they are recognizing its payment potential.
And yes, it is not sudden as it would take time for people to grasp how a btc is transacted. But once they got it, I believe they will realize its benefits as payment method.
For now, you can't really say btc can free the financial world because we are not yet in that level. Be grateful that more and more people are learning how to make their crypto transaction.