Well at least a Local account doesn't require internet access.
UmbraTemporis
At least you can use Windows without an account, on MacOS you can't even install an app without one I don't think.
Just to be clear, I hate both of them, I'm a Linux user.
You'd better hope that be pretty close to zero before attempting repairs.
From the one time I tried MacOS in a VM, setup is similar to Windows with somehow even fewer options and stronger 1984 vibes.
I'm a Proton slave, all my eggs are in their basket so I'll go ahead and provide some free marketing for them. ProtonVPN is pretty good since it's ran by a good company that cares about you, getting Port Forwarding setup on Linux is a bit of a chore but I believe they're working on automating it, the Windows app does have it automated already by the way.
I do worry about the long-term practicality of ProtonVPN because of this manual process, since as far as I can tell there's no way to automatically hand your assigned port to the torrent client...
Every OS requires setup.
Oh wow, that's pretty awesome.
I use Hetzner exclusively and have just one complaint. You don't get much choice as to where your VPS is hosted country-wise nor the OS it runs. You do get the standard list of options, as you would with any other provider, except that list is quite small on Hetzner. It's good enough, I use Fedora everywhere and they support that so I'm good. Anyway, it's obviously free to create an account so there's no risk in case your setup isn't supported.
Apart from that, they're brilliant. The web console is nice, clean and well-designed, great value (1TB of storage clocks in at a few euros/month), room to scale and a decent company. Can't comment on customer support since I've never needed it.
For the services you've specified, that'll run you maybe 3 - 4 euros a month (that's with automatic backups of your entire server + tax) since you can run all of that under one server.
Printing flip-books for the videos and keeping that in essentially a time-capsule. With a vacuum if you can afford it. Not perfect but will definitely last for hundreds of years. Look at the Magna Carta for inspiration.
For the audio, vinyl and kept in an even stronger container, instruct everyone to use gloves before touching it.
I have experience with this, from a friend...
You can download without an account, but if I remember correctly it's only certain types of media with a quality restriction.
Piped?