all great until you realize no one is allowed to export things to other regions if it works too well (crypto). Then besides that, the companies who now litterally live off of your personal data (most of big tech), wont suddenly drop their main source of income on behalf of the privacy of their users which clearly, they care nothing about.

unless replacement services are offered and adopted en masse (they wont be, u cant market against companies who can throw billions at breaking you), those giants wont give away their main source of revenue...

so even if technical challenges are overcome, there are more human and political challenges which will likely be even harder to crack...