Hopefully pretty soon Apple will have to provide the same functionality iCloud monopolizes so you can have an equivalent service. But right now you can do an encrypted transmission to a privately-owned NAS like Synology and then E2E cloud storage provider of your choice, with the caveat that things like background syncing are strategically monopolized and no app may backup your full phone.
https://www.catribunal.org.uk/cases/16897724-consumers-assoc... (hearing in 9 days)
They can't police every online server you can possibly rent, and they can't police them "all at once" like they can with the Google/Apple duopoly, all they can do is go after them one-by-one as they need access and as we see with 4chan, rejecting their assertions on jurisdiction is certainly an option.
They can't. But they can police any service that has substantial number of users. And that's what most of the people would use. So, the hardened criminals would use their own underground darknet services which the government couldn't breach, but the regular people would have no privacy at all.
> 4chan, rejecting their assertions on jurisdiction is certainly an option.
4chan can tell UK regulators to take hike because 4chan has no business presence in the UK. Any service that does want to serve UK users and is successful in doing so, will eventually find itself in UK regulators' crosshairs. For services that are based outside UK, they'd just stop serving UK users because that's the easiest way to handle it. Which is completely fine with UK regulators, in fact, that's exactly what they want - so that nobody would be able to provide privacy to UK subjects.
It's a bit like the famous HN post where somebody said that Dropbox is not needed if you have rsync and friends.
Technically this can even be correct. You can build and operate a good, secure solution for yourself if you have time and skill to build. Could make sense for a company handling sensitive data. Would hardly make sense for most individuals who are not professional SREs / SWEs. (To check how it feels, an engineer can try to sew themself a pair of pants to wear daily, or do something similarly mundane in what they are not skilled.)
A solution that can reliably work for non-experts is very important.