America runs on cash flow, especially that which involves the initial sales of goods and servicing the financing of debt. Think durable goods, entertainment and major purchases, such as cars and homes. It's the way commerce and capitalism in these United States work. Radio and media follow the path of money, especially where listeners, readers and viewers with the most expendable income are concerned.
It may be that 65+ retirees have (more) value in Phoenix, Palm Springs and Tampa than they do in Buffalo or Rochester. But radio, media and TV go where the active, well-traveled money trails lead them, and today, the money trail is all about 18-49, 25-49 and 25-54. 35-64 may be serviceable, but retailers know where the first, second and third tiers of cash flow come from. Sell the product, finance the product, manage the sale of goods and the service of debt, which yields profit. Older people in some employee sectors (public employees, those who've worked for blue chip companies, most certainly not radio and television) in certain pockets of the country may have money in savings accounts, retirement plans and investments, but a vast number of Persons 65+ are living on fixed incomes, often with with a minimum of savings. Sad but true.
It may be that these people didn't plan well for retirement, or it could be that as people age, the potential increases for unexpected events such as sickness, chronic ill-health, premature lay-offs or the ultimate curse, catastrophic illness and accidents. Factors such as these all sap the savings and expendable income of the elderly and put a draw down their capabilities of spending money on durable goods, and large ticket items. With no malice intended, in many cases those who are 65+ have little if any money allotted for their own burial.
Product creators and marketers know that the greatest return on investment comes from the 25-49 demographic comprised of Women and Men who control the cash flow related to purchasing and financing. In defense of the 65+, in many cases people in the 25-49 demographic may not be the wisest purchasers, often spending more than they earn or more than they saved. It is at this point where financing consumer debt becomes the driving factor in the profit formula.