but the ongoing argument that people should be buying it instead of GS just seems counter intuitive
I cannot remember that somebody in this thread told you that. I constantly always tell to buy the right tool for the right job and the right platform. There are situations where Unity3d is the best and there are situations where TGB fits best. And T3D can be a very interesting option as well when finished and available. C4 is the best option in some areas (optimizations, scene management, terrain with steep rocks and caves).
And if you really dont have the goal to finish a game then you can also learn and play around with Irrlicht and Ogre3d for free. They are both very good and well documented. I followed the tutorials and understood them easily.
So it indeed depends on your point of view and your projects. Nobody forces you to do something you dont want to do.
