Sharlin said:
Price, yes, but the six bodies in question are actually not that differently priced.
You don't see the same huge difference in prices among the upper lever models, but they're still there, and in this market segment those differences still matter. You also need to see them in a matrix - price vs. features vs. UI/ergonomics, not just in a linear fashion.
Sharlin said:
Too many similar models is not always a good thing. It may present potential customers with too much choise, leading to analysis paralysis,
Actually, they may instead offer what different market segments look for. Some may want an ILC camera that works more like the P&S they may have been used too (or, today, phones). Other may want a camera with more direct controls (dials) because they got more seriously into photography (or just feel it). Again, you won't see this fragmentation in the upper level cameras where it doesn't make sense.
You see it in many different sectors - the higher you go you'll find less different choices or models - because the buyers are less, products offer more, and there's a more general consensus about them. While you observer a far fiercer competition, a larger consumer base, and far more different needs to address within a given price range.
And many customers in this market segments suffer far less from "analysis paralysis" than the GAS addicted people in forums like this (me included - still paralyzed between the M5 and the upcoming SL2 )
Many of them will follow relatives/friends/teachers/sellers advice, looking also at price and availability.