Who should do Product Owner?

It's a demand analyst . , or is the architect doing Product Owner?

This question is like asking , What is a man? or a woman? Suitable for housework .

Some requirements analyst have good domain knowledge but not happy to help the team leadership team.
Some architects , deliver value to the user needs.

so do Span style= "Color:black" > Product Owner " " role " Span style= "Color:black".

only to find the right one. " people ", to do Product Owner . Only by finding the right " person " can you develop an excellent Product Owner. with a great Product Owner, team members can evolve to respond to changing " Agile Members . "

Who should do Product Owner?