Laptops are not long-term investments. Hardware innovation makes them obsolete almost as fast as phones. Whenever some new OS security feature comes out that depends on BIOS or chip capabilities then you need to swap motherboards (and often memory) which is the bulk of cost. Or when a new USB format comes out. Or whatever is the “flavor of the month” improvement in GPUs, Bluetooth connectivity etc. The only scenarios in which extensibility really makes sense would be SSD size, maybe battery or RAM. But if it costs double then you would be better off buying a new laptop now and then another in a few years, instead of paying up front for in order to “maybe” be able to swap some of the components later…
…“Someone shot an RPG at us from the upper top window of the building across the road, requesting air support, over…” …“They’re setting up another RPG, over…” …“Ah never mind, it’s a minor. We’ll just hope he continues to miss us”