Of course, large outlays are still cheaper, but this difference is not as big as a few years ago. The potential market for low-cost prints is small, local companies producing small quantities of goods.
Recently also a lot of home brewers begin to label their own beers, of course not for trade, but for example for contests.
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.
They are ordered wholesale and also consumed in bulk.
For each order, the production costs are optimized, and the appropriate technique and type of printing is selected. Graphic designers, DTP operators and printers deal with this.
They are responsible for the quality of the printout and as soon as something is wrong they are the first to be targeted by the dissatisfied boss.
Their work is quite hard and I have to admit that you have to really have a fuss to do it.
Work after hours, maximum focus and responsibility - definitely not work for everyone. .