I agree that having multiple sources is a good point on those grounds, rather than just ABD. Beyond situations like that which should not be mentioned, different sources are more likely to have different styles and techniques. Even if you have different modelers, company A may nudge them more in the direction of their corporate vision of how figures should be created. 

Ideally, all the sources would have something approaching comparable resources. It really does seem to me that an SM backed figure would have a better shot at gaining traction and longevity than a cottage effort. The only downside I see is that coming from different sources is probably going to lower compatibility e.g. a 3rd party Laura wouldn't take V3 morphs. IF Genesis fulfills its hype then being able to use textures, clothing etc. across a wide variety of body shapes and 'figures' would seem like a huge plus. I agree with the danger of monolopy but without a decent product, a monopoly isn't going to survive (absent paid off pols).

"Democracy is a pathetic belief in the collective wisdom of individual ignorance." - H. L. Mencken