Amazon has around 310 million active users. Amazon has 230 million Prime subscribers, even though it costs up to $15 a month. Yes, those include cheaper student subscriptions of course, but still.
Of course 30% is optimistic, but the average people I know happily watch those fucking ads. And don’t even complain about unskipable double ads. They don’t like them, they’re still too lazy to install an ad blocker as long as they get their content. Each one of them would absolutely shell out 5 bucks to continue watching (it’s less than a single beer when you go out).