It is the fall of civilizations, before the invention of the printing press, that has resulted in such a long climb out of "the darkness".
Rome had the engineering levels to make modern concrete, excellent buildings, roads and the famous aquaducts. What Rome lacked was science.
With science, Rome could have made steam engines, telegraphs and electricity. Rome had little science and knew nothing of microbiology. At its height, if Rome had science, it could easily have looked like 1850's America.
Magic would replace science. It would become a science in its own right. After all, anything that is repeatable under the same stresses over and over again is predictable. Cast this spell so many times with this spell, and you have a constant light spell, that can be triggered (as already noted before). The same with an auto doc that cast auto heal spells, or perhaps triggered by inserting coin into the strong box/slot. The level one analyisis spell may indeed be free, or provided on the cheap (5cp) but free as part of the service charge if services are purchased.
We have had this conversation in other threads: all game systems frame magic within a scientific process. It is all very Harry Potter. Every mage around the world can learn Fire Law, and it has the exact same spells. Talent, the right words and motions, and poof, the same spell, every time.
So the science of magic is inherient in the science of our games and modern society. We try to use magic in our games as magic, but the feat can only be accomplished though story telling and a willingness to suspend disbelief.