[JasonFruit]

Two problems with that thinking: a) even if you think you have a perfect design, you are still at "great, but not perfect", and b) there's no strategic advantage to doing less well than your opponent. In trying to avoid the later state where your enemy catches up to you, you're reducing or eliminating the initial advantage, which is probably not what you want.

[chaorace]

I'm more thinking that there are diminishing returns which are hard to justify when the cost of stealing a design remains fairly flat.