You are seriously deprived if you lack individual independent shops that
supply just what you want, a computer to your spec with no operating
system. Here in the UK you do not have to shop at PC world, we have two
places we can buy what we want.
Dell will load linux for you.
MS will still be around for many years to come. Linux versions will just
keep going also, neither will take over the world.
Sorry to disappoint you but its only much older hardware that will not
work first time. Mine all works on 8.10.