Yeah, I doubt that. If Battlefront 2015 has survived this long with stable servers with all the grief it's gotten, Battlefront II won't die so easily either. Heck, they'll have at least one on the servers, as I don't plan on going anywhere.
Now this brings up an interesting topic of discussion.
Light Spoiler Ahead
So, I went ahead and have watched the cutscenes from the campaign. Yeah, I'm weak.
From what I can tell, the campaign ends, but the story doesn't end. My first thought was that it's setting up for a Battlefront III, but then there's this new DLC mission called "Resurrection", which is a First Order operation name that's hinted at in the final minutes of the campaign. So.... we're not getting the full campaign at launch it looks like.