In House of the Sun, the bugs come to Dirk Montgomery, and offer him anything he wants if he'll stop the Hawaiian-style Ghost Dance before it opens a door for the Horrors. They aren't doing this out of the goodness of their hearts, natch, but because when the Horrors show up, they're on the menu, too.
As far as the Black Lodge goes, I don't think they're a Horror cult. If anything, I'd say they are the descendants of the Denairastas clan from Ioppos. Fits a lot better with their MO, and the Ultimate Master would then be the Outcast. And Denairastas would not aid the Horrors. He knows too well what they are. Black Lodge would likely remain out of it, unless it looked like the anti-Horror faction would lose without them.
The Bridge is already held against the Horrors. That's what Dunkelzhan's spirit has been doing since he blew himself up. And remember that SK and NeoNET aren't the only megas with dragon ties. Ryumyo has major influence with MCT through his Yakuza ties, and Lung's Triads run with Wuxing at times. EVO has Buttercup on the board, and she knows full well what the Horrors are. Horizon would oppose Aztechnology, as you said. Shiawase and Renraku would likely fall in with MCT, especially if someone makes it a 'pile on Aztechnology' thing. ESPECIALLY if Ryumyo has a chat with the Emperor and convinces him of the threat. That would get Shiawase in the camp, and Renraku would have to follow suit.
Which just leaves Ares. Given that the bugs likely won't make a public display of themselves (for all the obvious reasons) Ares will likely not side with Aztechnology against the rest of the Corporate Court, especially if someone can convince Knight that they might be able to gain power by carving the Azzies into tiny pieces.
