It’s just commerce isn’t it? Those who are interested in more challenging music will probably know where to look and are a very small market anyway. For the vast hordes of people who just want some aural wallpaper that makes them feel vaguely intellectual it is an obvious pitch. The same thing happens with all of the heavily marketed ‘cool jazz’ compilations. I guess it’s the same reason you so see much magnolia paint about.
The shame is that for young people in particular it might create the impression that classical (and jazz) is not for them where as in fact both genres contain such breadth and depth that there is surely something for everyone in there. The curious will hopefully always find this out of course, especially in the modern world when it is so easy to explore. It’s easier now than it was - when I was young I didn’t think there would be anything in either genre that I would be interested in, but was lucky enough to meet people who pointed me to stuff that I would like (and played it to me).