lmao you're so wrong on ads being more profitable than premium, especially on a per-user basis
According to this you can expect to make around $18/1000 views. That's with 55% going to the creator and 45% to Google. Which means that Google makes around $14.5 per 1000 views.
Coincidentally, that's also rougly the price of YouTube Premium. Are you telling me that you watch a thousand videos per month?
Give it a month or two, they'll break