Well the weight of carbon steel is less than cast iron, and glass is becoming less and less an attractive option (just about the worst option....imo)
Why they haven't caught on?
I'd wager it's the appeal of old cast iron. Using the stuff your, or some Grandma, used "forever" is kinda cool. That, plus all clad and the like spend a TON on marketing making you think a copper core (...etc) is superior.
There is a time and place for stainless, saut and searing isn't that time if your comparing to carbon or cast.
I use my carbon steel at home as well, but all my home carbon steel has been commandeered for the restaurant. So, ATM, I'm all cast iron at home. As well as come really old alum and some stuff Mom used all my life. (Man did she get angry when I threw that stuff in the dishwasher.....)