Well that is true!
Proprietary tools have been around longer than most open source ones and certification and education has traditionally focused around those. What I really hope is that Luxrender gains "critical mass" in terms of quality, userbase and number of devs to have the sort of momentum Blender has acquired. This commercial project should hopefully bring a huge number of new production-worthy features and bug fixes to the table.
Perhaps one day, Luxrender will be able to turn some more profit by selling books, training DVDs and through more projects like this one. One thing I've noticed is that the most successful project in the 3D open source world build strong ties to Blender. Yafray had close connections at the hight of its success, Sharpconstruct became sculpt mode, Freestyle in now being integrated right now and when nurbana died, its code was donated to the Blender foundation.
Not that support for Maya and Max isn't important - because it is (for "professional image"). But the natural ally for GPL code is other GPL code and the associated communities. In general, when two open source communities have strong,mutual benefit from working with each other, forging close ties makes each project stronger than staying aloof and separate.
Of course, I'm not saying where you should take Luxrender to. I'm just observing typical patterns of success for projects like this one! So excuse my rambling - I think this news bodes extremely well for the future of Luxrender, which is very exciting, that is all!