Don't worry, our generation is actually too broke to afford big things. Those ads are geared as much to Daddy's wallet as they are to their debt-ridden and/or wage-slave Millenial adult children. No parent wants to see *their* kid fall down the class ladder, but there's limited vacancy.
Ads gained to, and only to, Millenials services enerally spun towards the value and frugality angle, or are ads for debt-rescue or higher education (especially for-profit universities, since this generation is still full of suckers who think degrees are worth anything more than the paper they're printed on) or other financial services or products.
The Millennial generation is headed towards poverty, and we know it. As far as ads for teenagers go, teenagers aren't Millenials. They're the children of the young end of Generation X.