The place where Dropbox is spectacularly bad is multiple account support. Google does a good job of multiple account support - you log in to the relevant multiple accounts and things work.
Dropbox expects you to pseudo-merge exactly one personal account with exactly one business account. You end up with a mess. It gets even worse when trying to unmerge them. And is not useful should you have more accounts than exactly one of each. That mess will keep coming back to bite you almost every month as Dropbox doesn't do what you'd expect.
Dropbox is lucky that that they do two things their competitors don't: they support Linux and syncing generally works.
Huh. I have a personal account and a business account but I'm glad I've never tried to pseudo-merge them. I just shared a folder from one account to the other for the one set of files I wanted to share.
I could see that. I'm _only_ using it for personal so I haven't really run into the issues that you're talking about.
I think for Dropbox to operate in a pure filesystem-native-first experience they're probably approaching it from the 1 computer = 1 person standpoint (or one logged in user on the computer at least).
I've got one colleague who mistakenly let Dropbox psuedo-merge his personal and business accounts several years ago. He still hasn't completely fixed it!
I was around when they introduced the "multi account" support, and it was very easy to see how/why they did it. Instead of updating their clients to support multiple accounts (which they should have done), the client just keeps supporting only one account. Then on their back end they return "merged" content to the client. You can easily see how this can create chaos, because other people can also be updating your personal and business content, and untangling it all is a mess.
Same thing for me. I think I have 2 or 3 accounts (by accident) that I created over the years. When I login I never know what files to expect... that being said I don't use DropBox that much, but occasionally someone shares something via DropBox and I almost inevitably have a login issue.
Dropbox expects you to pseudo-merge exactly one personal account with exactly one business account. You end up with a mess. It gets even worse when trying to unmerge them. And is not useful should you have more accounts than exactly one of each. That mess will keep coming back to bite you almost every month as Dropbox doesn't do what you'd expect.
Dropbox is lucky that that they do two things their competitors don't: they support Linux and syncing generally works.