It’s been available for longer than people think. Back to the days of SNES and Sega Genesis. I know this for a fact, because I used to do it. I would hook up my system through my VCR, and record my gameplay. I would watch it to see what I had missed on certain games. I even got to selling the tapes, because people thought of it as a mostly silent movie. Others just liked watching the “pros” play the same as today. Only difference is that there was no YouTube back then.