Lawyers sue for a living and don't sell a thing.
Right now this is EDIG on steroids suing for a living.
Revenues based on selling something are just dandy if you can sustain your sales. As this economy demonstrates, commodities are not the place to be.
EDIG is so very lucky to have picked this time to protect its IP. If they can figure out a way to sell something and make money in the process, then I am all over it.
But right now they have reduced their overhead and increased their revenues while the rest of the world is writhing in pain.