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It comes down to the economics of manufacturing, and where the bulk of sensors are sold - into the everyday photographic market. The phase out of CCD production was a business decision.
You can rant all day long about it but it is not going to change anything. Sure there may always be a cult market segment that is willing to pay significantly more for limited numbers of CCD but they are no longer mainstream.
As far as picking easy targets with your complaints, the 294 does have cooling issues that result in banding when in long sub cooled used , this is the result of back lit architecture preventing full contact surface cooling by an adequately sized TEC. However, when used without cooling, in planetary, high frame rate mode, or for EAA use, it has little competition. It is in my view a niche camera, and I own the version without cooling, in fact the only astro camera I own.
Good luck with your crusade, but the market has spoken.
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