The Cosmo Communicator should be shipping to its backers next week https://www.theregister.co.uk/2019/10/04/planet_launches_cosmo_communicator_phone_with_real_keyboard_android_or_linux/. It has more than a passing resemblance to the Psion clamshell pocket PCs of the 1990s, except this one has an open design, intended to allow it to run a choice of open-source operating systems.

This looks to be a niche market, compared to the millions of units shipped by all the usual big-name vendors. But if they can make enough money--and keep enough customers happy--to stay in business, why not?