Going digital would have some other advantages too. It would be easy to make a staged calculator where buttons only appear as you learn how to use them, for instance, so you don't stick a calculator in an Algebra II student's face that has stuff for calculus on it, which only contributes to the mystique of "math being hard". For a specialist who uses physical calculators all the time for serious computations, the adv…
I'll add, a lot of those calculators were pretty damned hardy. It really did take an unfortunate sequence of events to kill my HP. Any one of which it probably could have survived, but the combination was just too much for it. In a lab or field environment, I like them better than a phone or computer for many operations (though definitely downsides since they haven't really kept up with generally computing power).