Buuuuut, the cost of implementing that stuff hurts the competition way more, so Deere and friends don't really fight it.
They're trading absolute market size for stronger control over market share. Less people are going to buy their products at the margin if the products are made worse. But those that do will buy it from them, so more profit.
Any argument made without acknowledging this is purely in bad faith. The problem is not regulation that benefits OEMs. The problem is that you can simply purchase regulations that benefit you.