First, important things were printed like books.
But these are REALLY important, not some literature for the mob.
Well, because the mob was quite illiterate at the time.
printing and marketing is an inseparable couple.
In computing, a printer is a peripheral device which makes a persistent human-readable representation of graphics or text on paper.The first computer printer designed was a mechanically driven apparatus by Charles Babbage for his difference engine in the 19th century; however, his mechanical printer design was not built until 2000.
The first commercial printers generally used mechanisms from electric typewriters and Teletype machines.
In the 1980s were daisy wheel systems similar to typewriters, line printers that produced similar output but at much higher speed, and dot matrix systems that could mix text and graphics but produced relatively low-quality output.
Multifunction devices offer increasingly larger scanning resolutions, less margin, larger formats, etc. But still, such home printers are far behind the professional equipment used in professional printers.
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.