What I'm saying is that he'll be getting exceptionally seller-friendly terms from everybody, for years to come, because in the course of this supposed "negotiation" he repeatedly breached the terms of the acquisition agreement, publicly slagged the target over and over again, reneged on the deal, and brought a horseshit case to the Delaware Chancery Court to try to avoid performance when the target held him to the deal he agreed to. Every other company is going to notice that (it's one of the most noticeable things to happen in business in 50 years!), and nobody is going to trust him.
I don't believe he did all of that as a negotiating ploy. If he wanted to get the price down, all he had to do was wait before agreeing to an ironclad, overpriced deal. In fact: "waiting" is what he ended up trying to make happen anyways!
This wasn't a negotiating strategy.
It's probably more or less the case that for the next several years, it will be difficult for Musk to do any big-ticket M&A, despite having some of the biggest pockets in the business, without agreeing to exceptionally seller-friendly terms. All because of how he handled an acquisition of a flailing media company that it is very unclear that he wanted in the first place.