No better time to start a new mobile OS
I think with RISC-V gaining more momentum lately, there is no better time to create an open OS for mobile devices. Sure there are Linux versions for touchscreen but they haven't really caught on because Android already dominates it. If someone doesn't take advantage of this time to get a head start for when we do see RISC-V become common for phones then it will be much harder and more time consuming in the future.