If it were just about trading costs and benefits, you wouldn't see fashions and fads in tech like you do. There's a definite herd effect. Some people wear thems

If it were just about trading costs and benefits, you wouldn't see fashions and fads in tech like you do. There's a definite herd effect. Some people wear themselves out trying to be at the front of the herd all the time, when it's enough just not to be at the very back.