It's not necessarily going to change the problem where you're not finding people for the job, or the salaries you're offering. A carbon tax isn't going to make that happen. Where carbon tax is going to play is that it creates a market for those better technologies. It rewards companies that can reduce emissions in their supply chains, etc.
I would point you probably to David Popp's piece that he wrote for C.D. Howe, and his rules for governments looking to spur clean tech. His rule number one is carbon price, because it doesn't put the decision in the hands of government as to which innovations make sense. As I think my colleagues pointed out, it just creates a potential revenue stream or cost savings, which in turn creates value for the clean tech.