"This is where my concern creeps in. Everyone is now free to use and adapt Symbian however they want (i.e. "fork" the code), which means we could have a broad spectrum of Symbian variants on the market. This isn't a symptom of the EPL licence, as the same would apply even if Symbian had chosen one of the more widely known GPL licences. There are many examples of OS forks, and not even in the open source world. For example, the closed source Symbian world has S60 3rd edition and S60 5th edition. Trying to tell a non-techie user that they can't run such and such an application because their phone is a 3rd edition handset rather than a 5th edition handset is probably going to meet with confusion at best, and at worst frustration and disenchantment."