The difference is you can make drugs. You can't make internet access.

Yes you can, and I believe the most basic infrastructure is already in place [1]. It would just need to be expanded on. Blockstream has been working in this space for several years now [2].

[1] https://blockstream.com/satellite/#:~:text=Blockstream%20Sat....

[2] https://blockstream.com/2020/05/04/en-announcing-blockstream...

I think they will see that possibility, though. So the US, Europe and others could agree to ban it at the same time.

Not all countries would need to sign on to essentially send it back to the stone age.

>So the US, Europe and others could agree to ban it at the same time.

Ah yes, like how the US and Europe agreed to ban drugs? How's that working for them?

That's not the same at all. Drugs have an inherent "value" or reason why people demand them. People love getting high. Drugs are addictive.

Bitcoin demand is driven mostly by speculative investors.

Maybe governments can't completely kill bitcoin, but they could certainly drive it back to fringe enthusiasts and criminal activity if they wanted.

Terribly. But that's a good example of countries agreeing to ban something.

How would they enforce such a ban?

By delisting the cryptocurrency from exchanges or shutting down cryptocurrency exchanges.