[yowlingcat]

You are being paid well under market by a very wide margin. Check out https://www.levels.fyi/ for supporting data. It's possible you believe that tech workers are overpaid rather than believing you are underpaid because of psychological factors, such as the cognitive dissonance of having to face the unfortunate reality that you've been leaving money on the table for at least 7 years, and you've probably left over half a million dollars on the table due to your inability to properly understand and measure market compensation. That's unfortunate, but it probably makes sense for you to face that if you don't want to miss out on another few million over the course of your career due to a fear of revising your thinking and admitting you were wrong.

Your call.

[njn]

I wouldn't work at any of those companies as long as I have the choice not to: they all make money off of proprietary software.

[yowlingcat]

You have made a choice to not work at companies that make money off of proprietary software, then you exclude the vast majority of the market of commercial software engineering, but that also means you have no idea of or don't care market rates are. So, you really shouldn't comment on that unless you figure that out, and it's a little disingenuous to do so this way.

[pb7]

You are paying $100,000s for that choice. Your choice does not mean everyone else is overpaid.