Traditionally, farmers do not lend their tractors. Not now especially, with air-conditioning, music and soundproofing. Spraying copper no longer turns you to a smurf; but still, no one wears the seat-belt.
You need a tractor to pull the slasher, sprayer, harvester and fruit-bins trailers; move bales of hay and rescue bogged vehicles.
Tractors hold their value. Trade-ins are huge and manufacturers support low interest loans. These factors diminish any temptation to bow to the economic logic of leasing or renting.