Childhood Obesity - Does America Cater to Obesity?

BBC Health has a video showing a mother discussing how her children got overweight, the problems they encountered, and what they're doing to lose the extra weight. The mother mentioned that she realized her son was getting overweight when she couldn't find pants that fit him properly. She had to buy pants in America because "they cater more to the overweight child." Her choice of words really struck a chord with me.

It's definitely a chicken and egg situation. Larger clothing sizes are necessary because there are larger kids who need them. But is childhood obesity, in part, prolonged by the fact that items like husky or plus-sized clothing is readily available? The mom in the BBC Health interview stated that the lack of clothing was a main impetus for changing the family's unhealthy habits and helping the kids lose weight.

I think it would be discriminatory to not have larger clothing sizes available. But, on the other hand, childhood obesity is an ever increasing problem and we don't want to become a society that caters to the issue. What do you think?