Most of the failures sold to a general consumer market though, mobile Linux should be able to survive just like desktop Linux, catering to an enthusiastic niche. Also, mobile Linux has the advantage that a lot of apps already use open source stacks, between F-Droid and PWA's there is plenty of an app ecosystem to keep things ticking over, for an audience that doesn't mind tweaking things.

F-Droid is a steaming pile though, compared to the high caliber software in most distro's repos. Linphone, Firefox and many other apps are months or years out of date, with known, active vulnerabilities.