I work for a local public radio station under NPR. First the funny part: public media stations are adamant that those aren't "ads" but are "sponsorships", as advertising would break their mission of being a non-commercial entity free from commercial influence. They get pretty granular with their rules in this regard. For instance you probably won't hear mention of pricing or subscription models in the messages because that crosses a line.

As a result we don't charge much for sponsorships. We still make money off of them, but it's small compared to what we receive from donors. IOW that flaw is our greatest strength: we aren't answerable to advertisers and only to our listeners.

Getting on my soapbox, when you see deals like ABC and Paramount licking Trump's boots, it's because they are deeply, deeply invested in those commercial interests. Many of those extend beyond advertising to trying to please the state and get merger approvals from the FCC, but in the end, for those guys it all comes down to revenue. That's important to keep in mind when you're looking at what they think is important to show you.

We're not perfect that's for sure, but we at least don't have to pander to advertisers.