Re: As much as do not want
"If we (and our across the pond cousins) can pool millions of £$ to extradite one alleged hacker, then we can pump resources into this, no?"
Wouldn't work. The people behind this are clever and obfuscate their tracks well. Even where found, chances are they are in a non-democratic state where they may be actively shielded by the national government, protected by a powerful local crime lord with his small army, or simply in a state with little functioning government.
You get to extradite foreign citizens only from law abiding countries with functioning and vaguely democratic government. That excludes half the world. If these people are in Russia, will Putin hand them over? It Chinese, would the party send them on a one way flight to the US? In Mexico, Ukraine, Kazakstan or where have you, the government simply doesn't function other than as a crime monopoly itself.
You also suggest that a few extraditions and prosecutions will discourage others. Simple fraud has been illegal in any functioning state for centuries, is often accompanied by long prison sentences (particularly in the US), but that's been no deterrent. And if you're based in some central Asian ***t hole country, would any of these be a deterrent, when your choices are picking local pockets for a handful of shekels, or making hundreds of thousands of dollars through cybercrime?
The best and perhaps only solution is back up by users and non-payment of ransom demands. The crime only exists because there's money in it, and regardless of enforcement and punishment, if the money's still waiting to be grabbed, new crims will sprout like fungus as soon as the last lot were scraped away.