>I was under the impression most have copied Apple and transitioned to soldering and gluing everything into an unserviceable mess
ultrabooks, yes. everything is so crammed and specs are relatively low, so you're mostly stuck with what comes in the machine.
Most other laptops (the "pro" competitors) tend to not do that. There's no good reason for an OEM to do that if they aren't optimizing for some sub 4lb laptop.
