If some of the components such as RAM were made replaceable, that wouldn't be the OEM's problem. They could still ship only a few configurations. When you decid

If some of the components such as RAM were made replaceable, that wouldn't be the OEM's problem. They could still ship only a few configurations. When you decided the original RAM or storage isn't enough, you'd just ask your local shop to upgrade. I'm not even asking for upgradeable CPUs or GPUs. Those could be a bit complicated on laptops due to chipset compatibility, power and thermal design issues, etc. But RAM is relatively cheap, can be made relatively easy to replace, and is a common thing to run low on. The same pretty much goes for storage. It seems weird and counter-productive to have components like that be soldered in and non-replaceable even by a professional.