That is to say, I also expect clarification and evolution of the rules during this enforcement action. Such that I would be most happy to have some of these arrangement flat out illegal. That said, https://www.ftc.gov/advice-guidance/competition-guidance/gui... was linked on Matt Levine's email today. And... "Our company monitors competitors' ads, and we sometimes offer to match special discounts or sales incentives for consumers. Is this a problem?" is answered with a no. Such that, this is a tough field to litigate right now.
And, what is it you are advocating for? That we only have rules that we can universally enforce? That would require that we know all of the ways that they can be broken from the beginning, so that we can encode those in law.