Yes, that's why I'm asking. There's surely tons of potential differences, in reliability, redundancy options, turnaround time for new boxes, selection of config

Yes, that's why I'm asking. There's surely tons of potential differences, in reliability, redundancy options, turnaround time for new boxes, selection of configurations (including recently released hardware and things like GPUs), networking options, backbone connectivity, software services, multiple data centers (so you only need to pay/deal with one vendor) etc.