In investigating the claim Disney is losing $30 million a week because of YouTube TV, I found the information to be mostly accurate and factual. The claim was originally published on Fox Business, which is known to be a reliable source. In summary, the claim discusses the conflict between Disney and YouTube TV. The conflict is due to Disney believing they are not receiving their fair share of profit, as a result, they removed their services from YouTube TV.
For primary sources, FOX Business and News are the only legitimate sources that state this claim.
As for potential bias, FOX is known to "lean right", in other words, their reporting on economic issues reflects a conservative perspective. This could be shown through how the article is more on Disney's side rather than YouTube's. Disney has previously lost a large amount of money due to the controversy involving Jimmy Kimmel. It's plausible that they are demanding more profit from YouTube to compensate for the money loss. However, this factor was not mentioned at all throughout the article, making Disney seem like the victim.
Attempts were made to contact Eric Revell, the author of this article, but I did not receive a response.