I'm not sure where you're getting those stats but a source would be nice. I would suspect that their customer base and/or core usage is made up of far more tech company employees via Cloud and Workspaces than it is average Joes backing up documents.
That's what I call a bubble.
https://www.theverge.com/2018/7/25/17613442/google-drive-one...
And that's in 2023.
As for the numbers of organizational paying users in 2023 (corporate users) were 6 million, compared to "over a billion" (in 2023). And of those 6 million organizational users of course only a smaller share are developers. Regular file sharing and G-suite stuff for office workers is the order of the day.
Really? I'm curious, are the people you know using Dropbox, OneDrive, or something else? Or are they just not sharing files in a public cloud?
I started to retort "how do you even collaborate on spreadsheets with your friends?" before realizing maybe I just have some, err, unique friend groups.
In the non tech-centric groups of friends and family, filesystem solutions have been superceded by all-in-ones like Google/Apple Photos, Notes etc.
Most people I know also use an iPhone meaning they're driven towards data storage that is built around an app use case, rather than simulating a desktop FS on another device.
Many of them use Google or Microsoft solutions for work though.
That's not incompatible with the demographic being vanishingly small and not who Drive is targeting at all.
"A lot of us" can still be an insignificant number compared to the Google Drive userbase and target demographic.
Now, "more than 10% of Google Drive users" might start getting somewhere. But I doubt it's even close to 1%.