Should there be a positive case where the ToS states how they make money? For example, on startpage.com they say, “Our search result pages may include a small number of clearly labeled “sponsored links,” which generate revenue and cover our operational costs”. A case like this would also apply to DuckDuckGo ToS which states something similar, a company that says they make money from selling your personal data, or on other sites that rely on donations like ToS;DR. There are many free websites out there and it might be nice to add a point about how they make money.
I don’t think “positive” is the right approach, “neutral” fits more to be honest.