I realized this when playing a game where I bought a few companies while playing with scientific. All my steel mills where on top of iron resources so I didn't worried about mining iron for them. But then I realized there was a lot of other steel mills that I bought that were on top of iron resources too, but they were not scientific. It took me some time to notice their supply was not coming from the land resources, but from the stock.
I think that for scientific, this distinction on processor buildings is a must have, but it would also be great to have particular types of building for each type of corporation. Scientific could look more instrumentalized with lots of antenaes and tubes, robotics could have a lot of moving parts, scavenger could have rough blocky looks while expansive could have a more rounded design.