It is about space, laptops don't really have the same luxury as PC.
Currently the trendy ultra small PC cases are going in the same direction with tightly coupled components, not in the connector spec, but dimensional fits.
> It is about space, laptops don't really have the same luxury as PC.
Whats the difference, really? If your laptop CPU and RAM are socketed you can replace/upgrade. If mobos and peripherals were standardized you'd see macs with thinkpad keyboards, and thinkpads with mac internals.
Currently the trendy ultra small PC cases are going in the same direction with tightly coupled components, not in the connector spec, but dimensional fits.