[TXnMA]

In most places on Planet Earth, there is no supply of lithic material of sufficient quality and size -- available exposed on the surface -- to enable the (technically challenging) production of Clovis-technology projectile points.

Nomadic people -- passing through localized good resource areas -- would make the points and move on -- into resource-poor areas, where no new Clovis-technology points could be made.

This could appear as an apparent short lifetime for the technology.

TXnMA   
  

[SunkenCiv]

Thanks TXnMA, both great comments.