ABC is a second-tier television network owned by The Walt Disney Company, one of the largest media and entertainment companies in the world, operating a vast international industry of television networks, film studios, and theme parks.

And is about to launch a direct competitor to Netflix.

ABC, the network that is literally available for free via an HDMI antennae, does not care about Netflix. Disney, arguably the single biggest company in entertainment or media and ABC's parent, is about to launch a direct competitor to Netflix. Which party is more likely to be driving the decision not to air Netflix ads.

It was the case when there were only three major national networks as well.

That said, google is in a different business. Their ranking should be fair (aside for their paid rankings). In this case they should not be favoring themselves over others, that’s to say they should not artificially bury competitors in the fair ranking.

I don't think that changes anything. There's plenty of other illegal, monopolistic behavior to pick at here without demanding that ad companies run ads for their direct competitors.