Blockchain is decentralised tech, so it will be as hard to switch off as it would be to switch off the internet.

The code is also (in many instances) open source, so we can see exactly what it does and the best cryptos go through a peer review process which is like an accreditation.

I have heard the theory that the CIA invented Bitcoin as some sort of Black Op and I'm not saying it isn't true, but it would be a pretty dumb thing for the CIA to invent because the genie is out of the bottle now and they can't put it back in or control it.

That said, I have no doubt the powers that be will want to crash the crypto market at some stage and it's possible we are being herded for a big cull (wealth transfer) so hold onto your hat :)