The other merchants, the lesser ones who weren't openly interfering in the silent war between Zach's guild and the Kadricke Coalition, were cautious. The Coalition had warned them not to aid, help, or accept any of the alchemist guild's offers. The moment they did, they would no longer have any dealings with the Coalition or any of their affiliates.
The Coalition wasn't the only merchant group in the capital, far from it, and they certainly didn't control everything. But they had their hands in a lot of jars. Upsetting them would make life a lot more difficult than necessary, especially if the Coalition succeeded in their efforts.
To the victor go the spoils and whatnot.
If the Kadricke Coalition won against Derot's business, the potions, alchemists, and recipes would naturally end up in their hands. At that point, it would be their turn to try and take over the market.
