Having to support one type of device allows for a lot more optimisation than supporting thousands

Commercial? Enterprise?

If you run mostly Foss this isn't even a problem, there's almost always an arm build (prism launcher even has arm on windows support)

I'd disagree but first I want to hear your opinion on riscv

Is a commercial airliner really civilian?

Some go as far as saying cooking requires a chemical change, else youre just heating

Every laptop part is replaceable if you have enough free time