I agree to a point. While you're right that the profit/liabilities margin is healthy, and that driving people into ad-supported tiers by raising the cost of ad-free viewing is mostly to keep these companies from having to pay out of existing income streams in order to keep profits as high as possible (even if they're still negative at the moment), I think it's still worth considering that there is a potential for ad free viewing to cause a company to owe more in residuals than they make in subscription revenue if, for example, a ridiculous amount of people stream something for whatever reason.