1. Looking at what you’d pay for 4tb of cloud storage and you’ll quickly find that return of investment
2. That’s forgetting the additional advantages of faster LAN backups, hosting docker containers & includes a free tin foil hat
3. If you look at the second hand market the prices are significantly lower (most people sell their NAS having upgraded to a larger model)
4. Not stuck to a single company that can change prices later

Anyone paying for cloud storage for home use has no smarts in the first place, just buy a Synology NAS

Check out LTT’s video about cheap SSDs you have the chance of being ripped off and getting a drive that looks twice as big as it is writing half your stuff to nothing.