I think it stuck around because the primary purpose of a computer is still information handling, and thus almost all of them require a keyboard. And since keyboard is always included and is "good enough" people just kept using what was available. History is littered with cases where something stuck merely because it was good enough and easily available. The QWERTY layout itself is a good example. There are layouts that are much better, yet 99% of the keyboards still use it. Because alt layout keyboards are scarce and using them requires relearning. All while QWERTY is good enough.