Could an alternative to "right to repair" be "pay for the value of the service"?
So if the tractor works, it generates money for the manufacturer.
If the tractor fails, the manufacturer would be charged - say - $1000 per day.
This way the user would not care if the tractor works or not. If it works, they make $1000 from hay. If it does not, they get $1000 from the manufacturer.
Even if the manufacturer is not interested in this business model, it could be provided by a third party. Either as an insurance against non-working equipment or as a full service by a company that buys the tractor and provides it under the "pay for the value of the service" model.
So if the tractor works, it generates money for the manufacturer.
If the tractor fails, the manufacturer would be charged - say - $1000 per day.
This way the user would not care if the tractor works or not. If it works, they make $1000 from hay. If it does not, they get $1000 from the manufacturer.
Even if the manufacturer is not interested in this business model, it could be provided by a third party. Either as an insurance against non-working equipment or as a full service by a company that buys the tractor and provides it under the "pay for the value of the service" model.