For backups, see if there’s support in rclone. You can set up encryption in rclone (crypt remote) as an overlay to other storage locations.

Once you encrypt your own backups, the privacy of the cloud storage provider doesn’t matter much. The main things to consider are price, storage capacity, and reliability.

Ubuntu Pro requires users (both individuals and enterprises) to register with Canonical to receive security updates.

No actually, that would be impressive. The DS is barely capable of decoding video. Getting that to work in real time, over the network, and low latency is a huge technical achievement.

This is just a text input and output connected to a remote machine.