This is always a difficult poine. The team owner/principal wants to get the best results possible for the team; if this disadvantages one driver over another that is life. The fan's want to racing to be fair and equal (well, not too equal of course) so that their driver can show that he is the best. Theoretically the owner should be in charge, after all it is his car which is giving the drivers their opportunities in the first place, on the other hand there is also public opinion to take note of, especially if you are trying to sell cars to Joe Public.