> and given the dollar is still on offer (the work's still gotta get done) someone else will earn it instead
Maybe, maybe not. The supply of work to be done isn't static. It might well be that the work is unpleasant, and everyone qualified to do it would now earn less than they did before because of the increased taxes, and it's now no longer worth it to any of them, so you can only get anyone to do it by paying more... but maybe now whatever the work product is isn't worth the higher cost, and you decide to just not offer the service or make the widget anymore, or it becomes worth it to automate it and not employ anyone, etc. etc.
Maybe, maybe not. The supply of work to be done isn't static. It might well be that the work is unpleasant, and everyone qualified to do it would now earn less than they did before because of the increased taxes, and it's now no longer worth it to any of them, so you can only get anyone to do it by paying more... but maybe now whatever the work product is isn't worth the higher cost, and you decide to just not offer the service or make the widget anymore, or it becomes worth it to automate it and not employ anyone, etc. etc.