My wool weavery workshop in Lycaron from my old save make a hefty 0 income per day, so probably not I guess.
Though, I tried changing it to other workshop like tannery and it's still not doing much better. I don't know if it's because of war stagnation or what but it just seem so unreliable most of the time. I probably will complete that playthrough way before it will pay for itself.
My friend said that Pen canoc potterry can generate pretty good income(around 500~ which don't seem that op tbh) but they already nerf that, so brewery is probably next on the chopping block.
Also I didn't know if they fix it yet but you can lose your workshop permanently if your faction are going to war with the faction that have you'r workshop city as their property. Which mean it's not really a safe passive income either unless you're on natural playthrough which is not possible if you want to progress the main quest.
Huh is that how that works because i have had workshops disappear on me before I had assumed it was due to the town being taken over by an enemy faction. So early on i started only opening shops in factions i wanted to be a part of.
And yeah at this point i think every workshop is about to be hit with a nerf.