Most of the people who buy from cold callers are elderly people or who have some other reason for suffering from confusion. No one in her right mind gives out her credit card information to a stranger over the phone.
In other words, a telemarketer is a con artist. I have a friend who was very successful in this industry, and it is an industry only in the sense that being a pickpocket or a paid hit man is an industry. They sell you a product with no value, such as "credit card insurance" against losing your job, to a senior citizen or a self-employed person who has no job. Or they tell you you've won a "free" airline ticket if you buy such-and-such greatly inflated hotel room. See? They are stealing. And thieves are never satisfied. Enough is never enough. They want to be able to open all homes and loot through everyone's jewelry box.
There is nothing deep or mysterious here.
how about you spend $100 on some cleaning products and i'll guarantee to donate 2 cents to the state police widows and orphans fund