What you are saying applies to all tactics, which always lead to counter-tactics, etc. It's always more advantageous for everyone to have their own home-brewed

What you are saying applies to all tactics, which always lead to counter-tactics, etc. It's always more advantageous for everyone to have their own home-brewed methods, because it's harder to counter. It's like in evolution; successful methods become victims of their own success in that there is now more selection pressure on countermeasures. It is, after all, called an arms-race for a reason.