I have a friend who spends a lot of time in dealing with patent violations.
Basically he says that a corporation will look at who they will be stealing the product from and if you are not IBM they will steal your product and not care about being sued because they can outlast your funds.
My friend thinks that his job defending the corporation which stole the product in the first place is not immoral. This guy never misses church and would never personally harm anyone legally or otherwise, but when it comes to the legal world he thinks that anything is game.
No wonder we all hate lawyers.