These two markets are so different that the only properties they share is both items cost money and are made out of roughly the same raw materials (steel, plastic, wiring, etc). Tesla managed to claw their way into the industry through a brilliant marketing campaign that nailed the subset of the (entirely suburban) market that believe an expensive car is a status symbol and new always means better. This line absolutely does not scan in the context of agricultural equipment, where the defining ethic is one of hard work and rugged dependability, both of which have to be proven in action. All the hyper-macho cargo-pants-and-a-tactical-vest advertising in the world isn't going to make a dent in an industry where the only two considerations are price and proven durability. So you've got a chicken-and-the-egg problem. To prove durability and workability you have to have product in the field, but nobody's buying unproven equipment. Put another way: the ag industry doesn't have a cohort of suburbanites with loose cash and a taste for novely to tap into.