Just imaging how can be the paycheck if the market is the entire world: seeing actual paychecks that means beside very little, very demanding in skills jobs where it's next to impossible find workers from some cheaper countries because due to their schools systems they can't form skilled enough people 98% of other remote works will clearly be interesting only for those from very poor countries were a very little salary is a high one in their own country.
For big corps of course that's perfectly nice: a call center operator from Turkmenistan enough fluent in some westerns languages is equally good than a local one, his/shes cost of living makes a salary of 150 USA/EUR very interesting, connections are starting to be good enough not to have problems, so... Remember that actual neoliberal-driven IT is built around the concept of Ford's model stereotypical workers, so real quality does not count much in actual systems.
I'm deeply in favor of WFH as much as possible, to do anything can be done remotely from remote because TLCs are there anyway and so that's can and should mean efficient and cheap (even if often due do bad IT choices is the contrary), but remember that we can't have equal cost of living anywhere: if we live at "polar" latitudes we need heating, a big expense, if we live at "tropical" latitudes we need cooling which can be a significant expensive (since it can be mitigated by p.v., just during the day), if we live in not-much-fertile or too dense area foods costs are higher, if we are far from industry goods costs more, but other things cost less etc. Even in an hypothetical "fair, ethical and just global world" we can't see equal costs everywhere, so we need different prices and different wages and different social systems. Ignoring this means push even more the inequality accelerators against workers interests.