Then I just wonder why can't they or somebody else build a similar laptop around a Raspberry Pi Compute Module then... I just googled that and found out there

Then I just wonder why can't they or somebody else build a similar laptop around a Raspberry Pi Compute Module then... I just googled that and found out there is such a thing branded WaveShare, seeming pretty good, but it's discontinued. That's sad, I would be buying it straight away but I couldn't even find a used thing on eBay.