With the tv shows now most if not all of the shows are made for tv by a separate production company where and they are selling the product to the tv stations .
As the tv stations dont pay much its up to the production team to arrange sponsorship of the program in order to make enough money to keep filming .The sponsors of course want their products pumped on the show ...sad but thats the way it is .
I tune out a bit when the sponsor pumping sections are on but enjoy the shows for the most part.