your argument is somewhat specious since the leading server manufacturers such as InnuOS, Aurender or Auralic are unlikely to stop updating their software. Conversely combining everything into one unit could have significant advantages:
- justifying inclusion of a superior power supply and clock
- obviating lossy USB or AES/EBU connections by using a common bus
- allowing for better components by saving on boxes.
As long as computer audio and Roon pursue their approach of separate streamer and renderer it will be a while before everything gets integrated.