Discrimination is not a function of supply and demand, it is a function of lack of legal protection. One can argue underleveraged groups does not deserve equal treatment unless they can overpower their situation, but personally I disagree with that opinion. I also totally understand if someone feels their salary is under threat and does not want to treat others fairly due to that. To be completely honest, there is a nonzero chance I would do the same if I was on the good end of the deal as well.
I'm not holding my breath over the situation changing in the near future, but 2 years of remote work do make people reconsider things.
Companies are not 'discriminating' against people in other countries due to 'lack of legal protection'. They are just hiring people in other countries, and paying them what they are worth.
That's it.
It's 100% supply and demand.
There are good and bad developers everywhere, and cost of living and opportunities are different everywhere.
They're going to be 'employees'.
Now - they will be paid less - yes (maybe that's what you meant?)
But that's a function of supply and demand.
They will absolutely accept 'less' because it's where they sit on the supply/demand curve.