That's quite the privileged perspective, Lawrence. I know plenty of people who begin coding on computers with 4 gigs of RAM. "Professional work" is very subjective. I started coding on a 4GB laptop myself and only upgraded my RAM much later in my professional career, and I've done plenty of "professional work", trust me.
The point of this post is to give people options, not get into a flame war about how much memory is enough for development.
I'm not flaming you or developers; this is a note to employers.
We're a place where coders share, stay up-to-date and grow their careers.
We strive for transparency and don't collect excess data.