Ibwas talking about the general link between suits and stock prices. Which I don't think is especially relevant in this case for the reasons you're talking about, and others
Certainly suits can and do effect stock prices, based on investors perception of future gains. Both the direct cost of losing a suit (if it's big enough) and the indirect cost of losing business as a result, can cause this.
I really don't see either of those scenarios happening here. The investors know there's a monopoly situation and nothing will change until that changes
Appreciate the Considered Moderation.
I did aim for that grey zone, commenting on the situation rather than the politics itself.