Who cares?
I mean NSO are the high profile one we know of right, are we suspected to believe that they're 'it' anyway?
Okay I'm being deliberately flippant both in my title and my comment above but in all seriousness I'm sure many of us query the ones we don't know about who are using and searching for the same exploits. I know why WhatsApp and FriendFace need to do the court action too as it's important they're seen to trying to stop it (and probably genuinely want to) but even if they win, would it end or just go underground with Mossad or whoever?
I don't know enough about this sort of thing to know for sure but I cannot believe they'd pack their toys up if they lost this.