[kbumsik]

Does this need to be decentralized? Decentralized does not necessary mean fair. How a decentralized platform could sove the problems OP mentioned; paying taxes (by using a decentralized platform, really??) and profitable for economics?

It is too naive to think decentralization simply can solve any social problems.

[8bitsrule]

'Democracy' does not necessary mean fair either. (Even in places where it isn't just a label.)

Decentralization solves problems created by centralization. It replaces them with the problems created by decentralization. We're fairly certain now that centralization creates social problems. Decentralization eliminates big dictators in favor of petty dictators.