Equity means equal results.
If you work harder than I, for the same pay, that is equitable but it isn't fair.
I think we're talking about different things then.
Nobody is asking for equal result. Equity means sharing the rewards of productivity, instead of allowing a group of people who do nothing get rich off of other people's hard work. That's fair.
Doing good work should be rewarded!
Equity? You mean equality (and that's still about rights, not pay.) Equity is just a stake in the outcome at all.