The large media companies are owned by broad commercial interests and indeed the enemy of working people however they try to position themselves, but the other Factor at play here is the right is trying to subordinate them further and accuses them of bias at every opportunity and they cave to the pressure. Not the least as they can step on their other myriad commercial interests for not caving as we saw with Colbert recently.

Caving to the pressure it will only make it worse though.