Not quite on the same scale but before the Raspberry Pi came along it was thought that Risk / Arm were just very specailised, since then the number of Arm based single board computers has increased hugely. I am not sure if the Pi can be fully attributed to this, but it did start something.
Upto then, Intel / Amd processors were the main choice for computers.
Of course phones had a lot to do with this too, but phones and tablets to me are different to desktop computers.
I probably need some clarity help here, but lets start a conversation perhaps.
@zleap Well, because of Arm's performance and reliability in phones and Pi's, we now have data centers running rack mounted servers powered by Arm. And be cause of Arm's success, we're now seeing the same sort of adoption by RISC-V, coming from vendors who would like to both design chips from the ground up for their hardware, and who would like to avoid having to pay licensing fees for the silicon they're using.