Not to mention the much larger range of techniques used, which have nothing to do with those we know from home printers.Printed roll, solvent, water, anhydrous - long to exchange. The quality of such printouts is higher, which entails the obvious higher costs of printing itself.
In principle, everything that comes out of the printing house can be included in the category of printing. There are plants specializing in the production of only a specific group of printed materials: eg leaflets, or only large-format printing.
However, this results from a simple thing: for every type of printing you need to have the right machine, and these take up space and cost a lot.That is why printing plants limit the amount of services provided.
These companies often outdo each other in offers and offer lower and lower prices, mainly for small businesses.
This does not mean that it is a failing industry, there is still a lot of potential in the printing companies and those that provide them with materials.