I think it would be difficult for them to start charging for the system at this point. Since everything is open source, if they added some kind of paid activat

I think it would be difficult for them to start charging for the system at this point. Since everything is open source, if they added some kind of paid activation system or a charge to download the .iso or whatever, someone else would simply grab all of the code, remove the activation features and put it up somewhere else as "freebuntu" or whatever.