Professional photographers sometimes gripe about how casual shooters undercut their businesses by offering (often) lesser quality work for pennies on the dollar. But it's not something that was brought on by cheap and accessible digital cameras -- this "problem" has been around from the early days of photography.
This group photo from 1887 is reportedly the first photo ever found of Vincent Van Gogh after he became an artist. If experts are correct, then the man third from the left (and smoking a pipe) is the legendary artist himself.
Back in 1887, a photography instructor named Edward M. Estabrooke published a book titled Photography in the Studio and in the Field. It was "a practical manual designed as a companion alike to the professional and the amateur photographer."
Filled with detailed information on how to practice photography with the equipment and technologies of the time, the book also contains interesting passages that describe how the world of photography was changing.