@farmerman,
That's interesting, farmer. I'd not seen that as 2 + 2 = 4 before, and am now considering it. I don't think its the whole cause of commercialization, but I bet it's part of the mix.
My mother in particular was extremely religious, involved in supporting missionaries, taking me to novenas, and as a family we were involved in the rosary crusade, which I've talked about here on a2k before. My father wasn't as thoroughly religious as my mother. Anyway, when I was seventeen, I was recruited by the nuns for the sisterhood. Much to my surprise, they weren't all for the idea, and managed to distract me with a long vacation trip - and that worked, as I got a mad crush on some guy. So... there were counterbalancing tendencies even with rather dedicated parents.