If you own your own domain, Google's GSuite for Business costs $10/month/user and offers unlimited storage. I'm fortunate to have fiber at home and upload to GDrive at around 90 megabytes/second.
Yes, it says you only get unlimited with 5 users (at $10/month apiece) but it works with only one.
I have just under 17 TB in mine-- I point Crashplan to a Google Drive mounted via FOSS rclone[1], saving $120/year for my old Crashplan family plan. And of course it's great for storing whatever you want, movies, pictures, etc.
One major disadvantage for iOS users is that you can't store your iOS backups on Google Drive. So I also pay Apple $1/month for the 50GB plan, simply because their base 5GB plan is insufficient to backup 2 iOS devices.