Depends on how we approach viability, imo

Can we currently see a reason for it with its current abilities/functions? No

But

We can look right at the history of conventional computing to predict a possible timeline for it. Single purpose computational machines that took a lot of power, a lot of room, and were fairly rare. Used for military or research purposes. Multi purpose machines that could run user created calculations and were slightly smaller and efficient. Begins to be used in more academic settings Multipurpose machines capable of being used to aid general office staff, continue to become more compact and efficient Portability becomes possible for select few with a need And so on until we arrive to now where nearly everything and everyone has a computer