The day RISC-V replaces proprietary PIC, AVR, and ESP as the microcontroller architecture of choice will make me, and the hobby electronics community, extremely happy.

Too many microcontrollers, especially the cheaper ones, can only be programmed with the company’s proprietary IDE and their proprietary version of C or assembly. AVR actually seems to be an exception to this which is why the Arduino and similar products chose them for their open source board.