The tier 4 engines are adding $5-20,000 per machine. Upkeep and maitenence means they will become obsolete quicker, cost more to maintain.
Same on the wood stoves.
I understand your point that redesigns and more complex machinery creates jobs.
On the other hand we need to pay for that labor, and so it adds to inflation.
Which leads to less sales.
Which leads to less jobs.....
Perhaps we break even somewhere, I donno.
But I don't think we really gain many net jobs if you look at the whole cycle?