I think it's the cost. You can make a cheap driver off 120V that looks like shit and has terrible thermals. A solid driver with good filtering and good thermal

I think it's the cost. You can make a cheap driver off 120V that looks like shit and has terrible thermals. A solid driver with good filtering and good thermal characteristics is expensive. So you're left with a $15 LED bulb that sits on a shelf next to $5 bulbs, selling to customers who see nothing other than two LED bulbs where one is grossly overpriced for no reason they can comprehend