No Sunfish, they will be able to buy newer stuff from the engineering firms that support the mining sector. Except of course gold mining. But for that to be true there will be 70% less flying anyway.
It is early days yet, but, like you, I expect that a very different international picture will emerge over the next two years.
Unless China jumps the gun somewhere in the S.C. Sea sooner. Imagine trying to unravel the wholesale manufacturing Sinofication of the last forty years.