Ask HN: Best Alternative to Dropbox?

Since Dropbox was launched on HN (in a way), it is only appropriate that I ask for alternatives to it here. I have been a paying subcriber for many years now but of late with their own app on Mac, they seem to have made many anti-user, pro-company-revenue, dark-patterns decisions (e.g., if I choose for some folders to be "local" I then see that all its subfolders are still cloud-only) that have sent me searching for another viable alternative, especially one that will allow an easy import from Dropbox.