I just cancelled my $119 annual Dropbox account, which expires in 10 days. I’m pretty sure I can get everything I need from iCloud plus the free Dropbox tier.
As a test, I moved everything out of the Dropbox sync folder except for one small folder that I still want to use with Dropbox. We’ll see if anything breaks!
I’ve been using Dropbox for at least 10 years, so this feels like more of a big deal than it probably actually is.