Or the wireless chipset that your corporate laptop happens to have. Or Bluetooh. Or it won't suspend properly.
The absolute best built laptops on the market right now don't come with Linux support...
This is totally laptop vendors' fault, but that doesn't change the fact of the matter.
PS: it would be fine if there was a few good options in all categories. Right now I see nothing comparable to an Asus Z13 but with first class Linux support for instance.