It'd their platform and a free service, so maybe it is fine to deactivate you and remove your content from the world.
But to simultaneously remove your access so you lose everything is just a demonstration that they have zero care about your work or compassion that their customers are human beings. In other words, they are straight-up psychopaths
If you care about anything, do NOT use these services for that. Great for junk accounts, but otherwise...
If we permit immediate removal, what are the reasonable boundaries? Legal/illegal is a court decision but you can't run all such decisions through the courts. So now we're back to Google just deciding what they will remove and it's on you to back things up. Sucks but that's probably reality we'll have to live with.
If it's cporn or other felony content, then fine, shut it all off.
For anything else, allow download only from the last three IP addresses the owner personally logged in from, plus two (if they've moved or are nomadic), plus maybe the same two or three last logged-in-from MAC addresses. Limit to three successful copies downloaded, then shut off.
Alternatively, if you still think that zero future sharing through their site must be the rule, then at least provide the content on a media copy at a nominal fee such as [cost of media]+ [50% service charge] + postage.
Finding fault is the easiest thing in the world. But if you apply your brain to finding a solution instead of merely a problem, things work better.
Additionally, the hosts like Google/YouTube, etc. can say that they have found that the material has potential legal issues, and they will hold it for release when the courts sort it out.
Again, the key here is to have some kind of recourse. Anything less is psycopathic - they make a fair exchange by providing a "free" service in exchange for the users' attention, and then when someone puts in 2/3 of a decade of attention and content-building, to simply cut it off with no recourse is just massive theft or vandalism, at best.
And, if they are not going to provide that, they need to provide at least constant prompts that Damocles' sword is hanging over their heads and they need to make local backups.
Note: Yes it ain't easy and it ain't fun, just like driving a car during rush hour.
This works in the content creation sphere.