[Romanulus]

You're probably correct. Given the amount of mental energy you need to dump into a game to win against your opponent is high, albeit short lived. These bursts of cerebral fortitude can be exhausting and annoying if you are the loser (which there always will be one of).

Given that risk to reward I can totally see why more gentile games like MMOs, Minecraft, hell even MOBAs have taken over. They are a lot easier to slide into (and out) at every skill level, which also equates to more money to the developers due to a lowering of the bar.