Ubuntu is growing faster on Windows 11 than on native Linux PCs, says Canonical
(www.windowslatest.com)
iiuc it supported a nicer workflow than git did, but that's not out of the ordinary as so does Darcs, Pijul, Jujutsu, Mercurial, etc. git is just "good enough" for people to put up with the rough edges, rather than learn a new tool that never has them to begin with.
It just never had the dev mindshare to catch on, it's been a GNU project for over 18 years at this point and that hasn't helped.