What would happen if the world's most powerful governments coordinated to ban mining and bitcoin payments? That could have devastating effects on hashrate and would cause most services to shut down or massively scale back. Sure, it won't "disappear" in a literal sense, but how sure are you that Bitcoin can survive a coordinated attack by governments? To date, they have simply allowed it to blossom, virtually unfettered. But what if Bitcoin truly is a threat to central bank monetary sovereignty? Will they just take it lying down? AML regulations =/= prohibition on mining and payments.
I don't know what would happen, but we can see that some governments are profiting from allowing the cryptocurrencies to thrive. That's why there will never be a consensus. It's possible that some governments will start working together to form an anti-bitcoin union, but the rest will find other solutions. Do you expect Japan that's been regulating and accepting it for months to ban it? I also believe that regardless of the regulations and bans it will continue to exist and be traded. People are defiant by nature.
Is this referring to the Venezuelan tax proposal? I guess governments need to devalue your money somehow, even if you're not holding their fiat money.
No, I'm talking about this proposal. They are talking about a "bitcoin tax" which means it's not a typical income tax that we are already forced to pay. They want to tax bitcoin holdings.