He doesn't need adverts, he's getting all this free coverage, just as he has done since he announced he was running.
To paraphrase: he who lives by the media dies by the media
Well, the broadcast media is paying him back in spades. At this juncture "no such thing as bad publicity" doesn't hold true. They are beginning (at least the side the aspires to journalism) to make up, finally, for having created him. A whole lot of people are getting tired of the Daily Trump Tirade. It's not selling any new votes and people are tuning out.
The print media, particularly that headquartered around NYC, has done a very good job of going after really damaging material. No one on broadcast would touch it, though. A lot of the stuff that's been coming out was in news articles months ago. We've had many "revelations" on these forums that we've just referred back to a story from NY Magazine or the Washington Post or NYT that has simply passed by, unnoticed.
One's particularly egregious favorite will depend on one's particular tastes and biases, of course, but my own is from an article/expose in the NYT in April. How did no one pick up on this?
http://www.nytimes.com/2016/04/06/us/politics/donald-trump-soho-settlement.html?_r=0
Yet no television network, broadcast or cable has done so, according to its author, even still.
Broadcast (in the person of CNN, leading the pack and Fox as the bottomfeeder) sold out. They may not have asked quite as obsequious questions as Fox & Friends but they certainly weren't loaded for bear. Trump was ratings. It was primary season and they were more interested in viewers than doing any real reporting.
The above Times article is referenced in this excellent round-table published yesterday by Politico. Five Trump biographers in a follow up to an earlier get-together. (rather a long read, but worth it)
http://www.politico.com/magazine/story/2016/10/donald-trump-2016-biographers-214350
Most of the people in the roundtable agree that the thing that they're most surprised has gotten no coverage is the abject racism. I'd noticed that, myself. It was only when Hillary herself went after the deplorables did it get any attention. But the wall, the muslim exclusion, the database... they all get covered on Trump's terms, not identifying or daring to call them racist.