Dropbox was the hardest of my data subscriptions to drop. I needed a new NAS (well a first real one), and got a "cheap" synology and 2 7TB drives. I then used their dropbox sync to synchronize my NAS with DropBox and vice versa, and then to also sync to my backblaze b2 storage account.
After a few months of it working without a hitch, I killed my dropbox subscription. Now I pay a few pennies for my NAS a month, and $3/mo for backblaze.
Every time my homelab friends get more drives, the discussion is always "what else am I going to store/host?", which is a more exciting topic/prospect than a "just in case" backup. And every time they grow their storage, the cost of an equal or larger sized backup solution increases as well, making the likelihood of purchase even less.
In that sense, I guess we aren't as far off from the SMBs that don't have backups in place, although if you ask the homelab people about it the answer is usually "I can live without most of this if it gets lost".
After a few months of it working without a hitch, I killed my dropbox subscription. Now I pay a few pennies for my NAS a month, and $3/mo for backblaze.