Actually, the principle of the market is opaque. I won't speak for the others, but how I thought. I have a character under control, I do something to them, then I build a "city" of two buildings, then I build a resource miner. The miner begins to mine. He puts it in a warehouse. How to get it? It's unclear. Well... I'll figure it out with time, it's not critical. Next, the question arises how to feed the berries to the laboratory. Because I can't put anything in the warehouse either. Eventually, I find a market and begin to understand the principle of how it works. Just what I noted. The fact that I literally gave birth to them all, and they also demand money from me :) Kill them all! :D However, I digress :)
So, the logic becomes clear. Working with the city warehouse is through the market. Capitalism as it is, for 300% of the profit it will go to any crimes :) And so I try to upgrade the workers and get confused again. There are resources in the warehouse, but not in the market. So you're talking about updating the market right now, and does the player know about this mechanism? I am not saying that this information does not exist, I am only saying that I personally did not notice it, although I am not the most inattentive person. This mechanics is unclear, because if you sell something to the city, the laboratory immediately picks up the resource and starts working. But with the purchase, everything is somehow different. And it's very counterintuitive when you have forward and backward working differently. Anisotropic, that's what it's called :)