On the econ Point I think you’d still have someone come in and undercut it. If you can steal a big share of a 10 year market then it could make sense for a lean startup as a once off sprint even if you know after that it’s dead.

The bulb stuff was a cartel not normal functional markets.

You probably can’t sell tractors forever but that’s short-sighted: you can sell parts and service that’s reasonably priced. People don’t just refuse to buy OEM parts on principle, they do it because the prices are often outrageous and/or the procedure to do so sucks and/or is arbitrarily restrictive like needing dealer licenses or what have you.

And just because a tractor is low tech and designed to run forever doesn’t mean it won’t still need parts and service. Time comes for us all and that includes your wheel bearings, bushings and seals.

Point #2 ought to be good reason for us to move past our archaic consumption-based economies into something where less consumption isn't considered a "problem."

On point 2: take a page out of John Deere's book, sell branded hats, t-shirts, toys and sell the movie license.