I think Proton is quite a good way to reduce your surveillance-state footprint.
I started using it two years ago. I'm only using email for now and setting up their drive / storage service is on my backlog. My goal is to use it as an extra offsite backup storage location. I'm also running two Nextcloud instances on my own machines.
Proton seems, practically speaking, about as good as you can get for a larger company. And, after doing a little more research, it does seem you can open an account with no KYC and fund w/ bitcoin! So maybe that could be an option.
Wish Proton Drive worked w/ Mountain Duck :( though I appreciate the pointer to rclone, hadn't heard of that before.