You are not wrong, but they had ads before: it was just called product placements. For example their Swiss Family Robinson (but in space) had a 15-20 minute segment of an episode about a packet of Oreos.
holy shit - this is aweful. I have, for a long time refused to watch any netflix produced content - i almost dont care about the diamonds in the rough after seeing stuff like this.
https://vimeo.com/418604619