The average person dont like linux, and if they buy a linux laptop the reason is because its cheaper than the windows one. So why manufacturers still use unknown distros (like lenovo with endlessos) and not something like ubuntu or mint?
To my knowledge the few laptops from the more famous brands I saw being released with Linux out of the box were coming with Ubuntu, can you make a few more examples?
Also Endless OS isn’t really unknown, it’s just that it’s not suggested at all in most communities because its focus is more on making a kid friendly distribution, which is amazing, but it’s not really what most people will be looking for
there is vaio and positivo which uses debian, lenovo also uses linux gutta. For endless os there is lenovo again and asus.