You'd be right but technology gets harder to improve the higher you go up. Going from 1mhz to 3ghz was really impressive, but the technological advancements needed to double that even further are insane.

Its like this, the iPhone 1 was released in 2007 and had a 2MP camera. And the iPhone 7 has a 12MP camera and was released in 2014. That's like in another 7 years the iPhone 15 had a 22MP camera. Sure it might *seem* like the same thing, but there's reason the phone's been at 12MP for a while. Your not doing the same thing you did from 1mhz to 3ghz as your doing from 3ghz to 6ghz

Linear progression with exponential technological advancements.