Moreover you keep saying we can't scale infinitely. Sure...but nobody is saying we have to. 4 is not as scaled from 3 as 3 was from 2. Doesn't matter, still massive gap.
As I said already, the gap from 3 to 4 was substantially smaller than the gap between 2 to 3, and all indications are that the gap from 4 to 5 will also be further smaller than that.
