Why there is only a few chip manufacturers?

Bhuichakkar

Recruit Rank 0
Messages
5
I wonder what it takes to manufacturer an IC or CPU or laptop chip? Like AMD Intel or Qualcomm Snapdragon? Only a few names I know, is it patented or what? Why no other manufacturers?
 

Tutman

Private Rank 2
Messages
40
Cut throat competition and hard for any new startups to get a foothold plus the cost!