These advertisers will come back. They don't have a lot of choice. It is up to the station to cinch their belt for the short term.
If they did and it were my station, I'd tell them to advertise somewhere else.
I think turnabout is fair play. After the show has aired, and the blatant truth has seen the light of day, it would be nice to air some commercials attacking those businesses that by their actions, moved to squelch the truth.
I don't think it's ever been done before, but these are new times, and we face a MSM that has violated all semblances of objectivity, truth and ethics.
If we don't clean house after this election, we will eventually lose. Because as Bush said, "We have to be right all the time, and they only have to be right once." Anybody that doubts this need only look to Venezuela to see how a democratically-elected leftist cannot be extricated by democratic procedures, once the scumbag is put in by idiot voters. The voters figure it out fast, but to no avail.