Everyone switched to RISC not just HP, though their PA-RISC was pretty decent in its day. We are now surrounded by billions of RISC chips, and a few PCs running an evolution of x86 that tries to be as RISC like as possible. But even in a PC: each SSD has a handful of RISC cores, the GPU has a RISC command processor. Heck, even my mouse has a 32 bit ARM core in it.
HP more recently tried (with Intel) to switch to the Itanium family which was a VLIW design. That flopped, making HP probably the worst poster child for RISC in the end.