People pay for Hulu. It got stuffed full of ads. People pay for Prime. It got stuffed full of ads. People pay for Netflix. It -- surprisingly but shouldn't

People pay for Hulu. It got stuffed full of ads. People pay for Prime. It got stuffed full of ads. People pay for Netflix. It -- surprisingly but shouldn't have been? -- got ads. Some services even try to eliminate the paid ad-free version. (To ensure ad audience demographic includes people that buy things?) It's not clear that people don't want to pay for subscriptions as much as providers don't want to leave ad money on the table.