Another "problem" with LED technology is that manufacturers who put out specific models of fixtures that are tied to a specific type of technology (like, say, a fixture with a housing that is made to fit 6 CXB 3590s, for example)....a year after they come to market, no one wants them! And another year after that, they are completely obsolete because there is a new chip or a new COB or a new driver that's even more efficient. Anyone remember Area 51 upgrade kits? LMFAO! That's what seems to happen to most of the "dedicated" fixtures. Unless the user can upgrade technology as technology advances, buyers are going to hesitate to commit to a design.
Unless the really good LEDs can get down to the same prices as all the shitty Chinese lights, people will continue to buy the shit, allow it to break and then buy more shit to replace it. That formula dominates the LED grow light scene and has for years. This forum and this particular section of this forum is a tiny, tiny microsphere of people who "know better", but the greater portion of the market isn't us!