Right conclusion...wrong reason. The reason is because more doctors chose those areas at a time when the price of such surgeries were very high. Given the huge time lag between seeing high surgery prices for cosmetic surgery and the time to train and be board certified, it's only lately that prices have fallen due to more competition from more cosmetic doctors. As the prices have fallen, more people have elected to have such procedures. It's ALWAYS supply and demand if you look deeply enough.
Actually it's not always supply and demand - only if free market forces are allowed to work.
They work for lazik and plastic surgery because it's not controlled by the government. Then supply and demand prevails.
It was the government that came in and set the price for health care. They reimbursed at a high rate for procedures and at a low rate for visits to primary care physicians. Insurance companies followed suit.
Supply and demand has its effect on plastic surgery but it's having little effect on health care covered by medicare and medicaid.