The good ThinkPads with Magnesium feel much better (both for hand and lap) and are lighter. And the expensive and complicated build allows maintenance (replacing a keyboard is a bless on the X13). Lenovo is just stupid and also allows to purchase low quality screens, low quality frames and even a Windows. A thing that Apple never allows, you cannot purchase a bad configuration.
The MBAs at Apple figured out much earlier, that a rigid metal frame is cheap and gives the impression of quality.
Aside from that?
Customers are guilty, wanting a shiny and quick solution. And governments and companies by following ultra rigid and outright stupid purchasing guide (ISO craziness and “we can drop Windows, we invested another 300.000 in a Windows only Application).