It's just that so much of our community is still in love with such geriatric technology.
Genghis,
Not so sure that the majority of mainstream GA like flying around in aircraft which are particularly susceptible to carb. icing. While there's certainly an element of appreciation of the geriatric, I'd certainly buy a simple cure for carb. icing if it was available to retrofit. But it's not is it, and the reason for that isn't a lack of demand, or love of the black art of appropriate application of carb. heat, it's the onerous and outrageously expensive certification requirements for a solution.