Oh my gosh I just figured it out.
Okay, all you open source evangelist people: your knee-jerk reaction to come at people who are talking about a problem with whatever commercial software they use and suggest Your Favorite Alternatives™ is exactly like saying "why don't you just buy a house?" to someone complaining about their landlord.
EDIT: There's more than one post here. Pick apart the analogy if you will but... beware you'll be proving the point.
@TechConnectify even if the open source software does exactly what you need it to do and is free, if it is a large part of your workflow, it might be like asking someone to move cross country. Some people can't afford that. Similarly, your job might not give you option to switch living location or software tools.
I know people where a $500 licensing fee is trivial compared to time and cost to port other tools and past work. I know others where a $10 fee is unreasonable. Focusing just on cost or a single function of the software is myopic, potentially self-centered assuming others use software the same way.
To stick with house analogy, different houses have different prices, commute times, space, storage, etc. Maybe some one has specific mobility access requirements or space for a hobby. I've seen people inherit a house (it's basically free) and not move into.
I say that as someone who uses, advocates for and contributes to open source software.
@PlasmaGryphon Your perspective is refreshing. Thank you.