I'll never understand why companies make such customer hostile decisions. I can't see any upside to this and I can't imagine what the discussion looked like when implementing this decision. My (admittedly cynical) guess is that it was one part "We're fielding a lot of support questions on products that aren't ours and our malfunctioning" and two parts "Our customers will be more motivated to buy Philips Hue products…
Or, if you look it at from a different angle, it's a user friendly decision. Maybe there were enough people saying hey this $NO_NAME_CHINESE_MANUFACTURER bulb doesn't work therefore Philips sucks. Can it contribute to introducing a monopoly? Sure. But it's a luxury good so I don't have much problem with that. If Philips controls what is compatible and what is not, it can ensure to a greater degree that customers experience is satisfactory.
I understand the general BigBadCorporation vs Open Standards sentiment over HN but, really, it's sometimes for the better.