We did a Web Developer Economics series a few years ago, where we looked at the various costs of being a web developer:
I’m sure some of that software and hardware has changed since then, but the spirit is the same. It costs money to have the things you need to do this job.
I just wrote a similar article, but from the perspective of a business paying for the software it needs. That link is to Medium, but it was posted on the CodePen blog originally. Just giving that a shot to see what all the hubbub about Medium is about.