As developers, we tend to look for technical solutions to things, so when we see a situation like the one you describe, we come up with ideas to "fix" the situation and make everything fair.

But a more productive approach when confronted with the fact that "negotiation skill seems to have more bearing on how much I can make than technical skill" might be to just take advantage of that fact. If tech folk are as generally bad at negotiating as everybody here seems to agree, the best course would seem to be to simply get better at negotiating.

That's actually quite easy to do. And if you do so, you'll make a lot more money.

That's a good thing.