Australia is the richest nation (that isn't just a tax dodge) on earth. Sure because the metric used is USD it varies.
I'm going to give you a great grounding example. A typical gardener in this country can take home $80k USD a year. That has to be 4 times or more someone in the USA. I'm not talking a garden contractor in Bellair I'm talking an average Joe.
Google are great at hiding their revenue but I guarantee you that Australia represented a good 20% of the US based revenue. Despite having a population that's only 10% or so.
They would absolutely have their bottom line impacted by withdrawing but they aren't going to. Because of the former sentence.