So does a PC. Steam Machine can't be upgraded. Once SM becomes too slow for gaming it will become mostly useless as it lacks necessary ports to be repurposed

So does a PC. Steam Machine can't be upgraded. Once SM becomes too slow for gaming it will become mostly useless as it lacks necessary ports to be repurposed into a reasonable home server. I always reuse my old PC parts as home server upgrades. Steam Machine uses a proprietary fan that will be annoying or even impossible to replace 5 years from now.