ShawnDriscoll said:There's a group of people that only see FREE with some games. Abbreviations like OGC is all they are interested in. See cult movements. Corporations and sold products are a bad thing to them.
Why are you so miserably cynical that you have to immediately assume that everyone must be acting out of malice? Stop making unwarranted assumptions about people. Open Content is there for anyone to be able to use in pretty much any way that they see fit and it's certainly neither your place nor anyone else's place to judge them for that.
Perhaps you need to be reminded that Mongoose themselves took the d20 SRD and published it as a hardcopy and sold it as the "Mongoose Pocket Player's Handbook". This was pretty much exactly the same as the d20 SRD that was available online, but they were selling it for about $20. Why? Because they could. Are you going to judge them for that too?
Publishers may (for any number of reasons) simply not want to associate their setting with Traveller, but may like the rules that are available as open content and free to use. Maybe they find the Traveller license to be limiting in ways that doesn't suit them. Or maybe they want to tweak those rules in their own way to make them something similar but different (see e.g. Mutants and Masterminds).