I'm having issues not using Dropbox Plus even for the basic service after they limited the free version to three devices or less. Can't have a phone, two laptops and a desktop machine using the same account. Feels like they're really trying to push people to upgrade.
There is a personal version (2 TB) of Dropbox, but it costs €120 per year.
Meanwhile the cheapest Google Drive plan (100 GB) is €20 per year, cheapest iCloud plan (50 GB) is €12 per year and the chepest OneDrive plan (100 GB) is €24 per year. There's also Nextcloud, which you can host yourself or pay someone like Hetzner to host you an instance (€43 per year for 100 GB).
I don't think the value proposition of the personal Dropbox plan is actually that good compared to really any of the competitors. Most individual Dropbox users probably don't need 2 TB storage or any of the other fancy features being advertised. I think I'm personally under 20 GB after all these years of Dropbox usage.