Some questions/opinions/remarks above seem quite strange for me.
I visited douzains ( didn't count : maybe hundreds) of factories of CCTV, and now IP cameras, in China.
What you call Western cameras are more and more Chinese "designed" and produced cameras with some personalization. Inclusive for the US, European or Korean "big brands".
Why do I write "designed" ? Because the true designers are Sony, HiSilicon, ... NextChip .. : they produce the sensors, chipsets, etc. The fonctionalities and the main capabilities. The manufacturers fix it in a PCBoard, put it in a case with a lens. The "big names in the US and Europe design the packaging, the housing sometimes, and specify or sometimes design their firmware.
The ones that pull the ropes and make the big profit on this market are not the Chinese camera manufacturers but the silicon foundries. The first of them is Sony.
After that, the Chinese assemblers do with the culture they have. Don't expect them to understand the US or European structure of the market with the OEMs, integrators, distributors, installers, etc ... They do with the knowledge of the world they have (and it's quite restricted).
You can learn electronics at the University, factory/people management with the army and not have a good idea of the best way to use the structure of a market with its organization and players.
So it can be very destabilizing ...
If you observe the progress made by the Chinese, you just notice that today they can deliver AHD/CVI/TVI quality at a price 5 times lower than "normal 600TVL CCTV" one year ago.
Want it or not : this is technical progress. And it will not stop.