I've used Google Drive sparingly for years but recently upgraded to a Google One 2TB account to give me and my family more storage and syncing capability across devices, as well as allowing me to consolidate all of the files on my laptop - which includes all of the "family management" documents, photos, videos, etc. - in one place rather than split up so I could stay under my 15GB free Google account limit.
For years I have also used online backup. I've used IDrive in recent years (I've seen some complaints here, but I've found it to be fine, if a bit clunky) and Carbonite before that.
But with my IDrive renewal coming up, I have wondered if having both Google Drive and IDrive are redundant. Years ago, I recall reading that online backup was still necessary because cloud storage wasn't reliable. But it seems like cloud storage has come a long way in terms of reliability and features, like file versioning and retrieval in case of loss.
I've looked extensively and been surprised not to find much information on that question. Is there a consensus? (I should add that I also back up to an external hard drive so I do maintain multiple copies.)