Some of it is interests. As mentioned in another thread here, a lot of upper class people have no interest in skills that have vocational value. They consider programming and tech to be blue collar-ish. The amount of time you have to spend dedicated to tech to stay good at it isn't compatible with their lifestyles.

I also find that one of the doors that might be available to someone from a lower class is hedonism. There's a lot of partying going on and if you're willing, that's an avenue to access. I'm not willing.