Will they destroy the prices for HD Cameras in 2015?
It's not just the HD* analog variants, even 720P and 1080P IP cameras can be found for under $100 these days. When you figure that wiring costs and installation labor are mostly a constant, and exceed the price of a simple camera, almost any price under $100 is effectively the same, or effectively $0.
The 3MP and under camera game is pretty saturated, uninteresting, and not particularly profitable for the dealer. Manufacturers are still making pretty good margins in that segment, as long as they are not greedy.
Now that we have cheap moderate resolution (I don't call anything 5MP and under "high" res anymore, that's the standard resolution), a consistent connectivity model (ONVIF) and prices at a point where end-users don't have to limit their options as much on how many cameras they can afford I think we'll start to see the "smart phone" era of cameras. Just like basic cell phones raced to the bottom and manufacturers pivoted to making "smart" devices, we should start to see the same thing with cameras. Usable video analytics, "store and forward" edge recording, onboard basic LPR, stuff like that. Customers will/should start to expect more than just a good image from their camera, they should start to expect the camera to be more of an "active" participant in their corporate security.
On a semi-related note, I think some of the big names are starting to hate ONVIF. Previously these random overseas companies had a hard time competing because there were no drivers in the mainstream VMS's for their products. It was a chicken and egg problem, VMS's wouldn't support those products with no user base, and most users rightly wouldn't purchase something that came with a huge headache tax support-wise. Now with ONVIF essentially being the de-facto camera protocol, there is a unified way to discover, connect to, and handle basic settings for cameras.
Users can choose a camera based on cost/features and be less concerned about VMS support for it. This is good for the Dahua's of the world, and maybe bad for the Axis's of the world. And potentially really bad for the caught-in-the-middle big brands like Canon or Samsung. Their brand alone isn't strong enough in this market to carry a premium price and compete head to head with Axis, but their corporate overhead prevents them from being price competitive with Dahua. Their best move (IMO) is to dodge left and build a really feature-enhanced (usable features, not gimmicky shit) camera that is priced in line with the comparable Axis model. Auto-focus, adaptive IR, advanced motion detection, motorized zoom, SD card recording, etc. are all standard expectations, not features. All that stuff is expected in a $250 camera (the $100 cameras are usually fixed focal length cams with relatively wide (2.8-5mm) lenses.