Ruin Explorer
Legend
The rise of video games? In 1983? I highly doubt it. Console games were just getting started and computer games were in their infancy. Hardly something that was going to come up and crush the D&D juggernaut at the height of the fad. In the 90's, when those studies were done? Sure, I'd buy that.
But I really don't think you can point to Pac Man as the reason people stopped playing B/X back in the day.
I tend to agree, here. I was introduced to D&D in 1989. I'd been playing video games since 1984. D&D was approximately four million times more exciting, right from the moment I heard it described, and didn't draw on the same time pool (being social/group-based). The only time I saw a genuine conflict was with MMOs post-1999, which drew on so much of my free time that they hurt all other activities, and were also social. Plus 1983 was the year of the video game CRASH! So... hmmm...