Peoples' adoption to new and better technology is like a bell curve. I don't think society should be spending time and money catering for those at one sigma who just don't get it.
... Also, it annoys me that you can't even buy the parts to build a DAB radio.
In Australia, very few cars have it basically because the feature eats into the car manufacturers profits when most consumers here are ignorant of digital radio, despite the extensive advertising in the radio industry. You sell 100,000 cars a year. Add an extra $20 per car manufacturing cost means a $2,000,000 hit. In my case, I would not even consider buying a car that does not have DAB+ as standard. One with Internet access would be a bonus, but except for Tesla, car manufacturers and consumers are too technically retarded to consider such a feature. Not surprisingly, in Australia house purchasers almost always buy the house and THEN consider internet access and start whinging about crappy or no internet.
I remember the days when many wealthier Australians spent big on a Hi-Fi stereo VHS video recorder thinking it was better, but most of them just played the sound through their crappy TV. They were the type of consumer who left the advertising stickers or plastic film on their precious video recorder. They did not know why they left the stickers on, they just did it. Many went to VHS rather than Beta because retailers were given great incentives by VHS companies like Panasonic to push their products. Beta was a slightly superior format with video quality and much superior mechanically. The dumb consumer didn't know any better, he just walked away thinking he got a good deal.