I used to get a really good workout playing the Kinect Sports games on my Xbox. I'd play the boxing game for a couple hours at a time some days, until my arms were extremely sore (I did it for exercise). Eventually I started carrying light weights for the boxing game.

I'm not sure it's that these things never "caught on". I just think they were marketed poorly as serious games, and so only non-serious gamers bothered with them. Then, like with all games, we got bored and moved on, and the market never innovated further (though there was a Kinect Sports 2).