Mobile Linux is a thing, though I think it would take governments mandating unlocked/user-unlockable bootloaders to gain literally Any market share. It would also probably take a compatibility layer for running Android apps similar to Wine in desktop Linux, but Android already runs a Linux kernel, so projects like Waydroid are most of the way there already by just running Android inside a container.
Mobile Linux is a thing, though I think it would take governments mandating unlocked/user-unlockable bootloaders to gain literally Any market share. It would also probably take a compatibility layer for running Android apps similar to Wine in desktop Linux, but Android already runs a Linux kernel, so projects like Waydroid are most of the way there already by just running Android inside a container.