[mindcrime]

I don't have a good answer for that myself either (yet.) But for what it's worth, there have been some good articles and discussion around this topic before, that might be of interest to anyone who hasn't already seen them:

http://blog.asmartbear.com/not-competitive-advantage.html / http://news.ycombinator.com/item?id=1507887

http://blog.asmartbear.com/unfair-advantages.html / http://news.ycombinator.com/item?id=1528614