A: they’re betting most people will accept it, and they’re right. The same thing happened in the early 80s when cable television advertised themselves as the pay-for-ad-free service, then started sneaking ads in. People complained, sure, but we all saw the outcome. They got away with it.
B: Greed, capitalism, and fuck you.
It definitely did. I remember it vividly (I was alive back then). And I’m talking about the premium services, specifically (e: which was the point of my comparison: the premium paid services back then advertised no-ad service, then included ads, just like the premium streaming services are doing today).
Here’s an article from the NYT in 1981 on the topic:
WILL CABLE TV BE INVADED BY COMMERCIALS?
e: a quote: