Earlier quoted context omitted.
In the early days, farm tractors were pretty simple, and many farmers did a lot of their own work. As machines got bigger, most used local repair shops that could always order from parts depots. But as electronics has invaded tractors (for many good reasons) it has gotten to the point where you really need the diagnostic equipment. So this is a lot like what auto repair was in the early days of the diagnostic plug-in…
I still don't get from your description what the point or motive would be. Who is locking in whom, for what purpose?
From the article:
> A Crain’s Chicago Business article reported that dealers make five times the profit margin off repair than they do off the sale of new equipment.