You need to develop with mind to differentiate between the pay version of your software and the cracked version that the pirates will inevitably get. In gaming,

You need to develop with mind to differentiate between the pay version of your software and the cracked version that the pirates will inevitably get. In gaming, the traditional differentiator is multiplayer, or access to a community forum where people exchange levels made with the level designer. This is one thing that makes SaaS so attractive to developers -- generally it's impossible to pirate.