i really worry about this...
similar with fdroid & Foss app store developers. also, different but similar worries, 3rd party android roms like Graphene OS....
i really hope a fully open source mobile device hardware & software stack's supply chain & ecosystem can evolve to fill our needs.... (where the community efforts are unified enough to self sustain, and where novice users can have confidence in a default choice before being forced diving deeper into niche projects)
pie in the sky.... hopefully not a pipe dream.... not forever at least