Google announced they surpassed 100 million subscriptions to Google one already and $15B in revenue for subscriptions (between YouTube premium, TV and Google one). I'm not sure your estimate is realistic.
I wonder how many of those 100 million subscribers are non-techy people who accidentally signed up?
On the other hand, I am a "loyal" G customer and I never felt pushed into this. I pay for YT premium and iCloud+ (the equivalent to Google one, albeit with much less storage).