Because they have a problem with the simplest thing, choosing good brand name. Among Android companies, Samsung was the first one with consistent brand strateg

Because they have a problem with the simplest thing, choosing good brand name. Among Android companies, Samsung was the first one with consistent brand strategy: Galaxy S1, S2, ... updated each year. It doesn't require IQ 160 to grasp this: good name and update each year. But for some reason HTC, each x months created new brand: Hero, Desire, don't remember, One, and the last one: One X/Mega f... I don't remember even after reading Engadget three times a week. LG tried to copy Samsung and changed the letter to G. So finally we have G1 and G2. Not bad, they are more consisted than HTC. Sony has letter Z but still doesn't know how to enumerate updates. The last model is Z1 and the previous was Z or Z Zero? I don't know. Blackberry also uses letter Z, and their last model is Z10? At least Google coined good brand name, Nexus. Nokia has Lumia series which are selling quite well.