Not to mention that perhaps the low-hanging fruits are all reaped in the earlier years. The newer tech might just not be as impactful as the yester-decade's, b

Not to mention that perhaps the low-hanging fruits are all reaped in the earlier years. The newer tech might just not be as impactful as the yester-decade's, because those impact is already felt, and creating more impact in the face of today is getting harder and harder. Exponential growth is not possible to achieve in practise.