I imagine it would be challenging to come up with base slabs which would work across the globe.

@witty-gigabyte-47737 Not at all. You pick a percentile e.g. top 10% of Seattle and pay that to everyone. - People won't join you just because you're paying high, but people will leave you if they think you pay less. - There are very few businesses who can out pay Google, Netflix, FB etc, so most companies shouldn't even try.