This is what bothers me. I suspect it's not random, it's market segmentation. So ok, a vendor may think that some consumers value feature X, Y, and Z, while others value featues X, Q and V. But one thing that is missing from all offerings is a phone that has them all. This is the phone that I would like to buy, even if it was significantly more expensive than the rest. But I can't, because it's not there.
(Or I haven't found it yet. If anyone knows of such device, I'd be grateful for a pointer.)