> they mostly need to be profitable through advertising whereas the conservative side can be run at a loss while their backers recoup their investments through deregulation and tax cuts

This is insane. Show me one conservative-leaning media startup that was saved (or turned profitable!) through "deregulation and tax cuts" without reliance on other streams of revenue.

Unless you somehow mean that a better, faster-growing economy via deregulation and tax cuts results in better business outcomes overall, regardless of political leanings, which I would agree with enthusiastically.