> Farmers have always done as much of their own maintenance as possible.

Well, sure. Maintenance is an off-season job. Its that or sit on the couch watching TV, so you may as well be in the shop getting equipment ready. Even if it takes you longer than an experienced tech, does it really matter? Not really. The winters are long.

Repairs are a different story. When things break, you need it fixed now. Wasting a day trying to figure out how to separate complex, seized parts from each other isn't time you have. You're going to be hiring a mechanic who has done it a million times before.

Of course, more important than who does the work is part availability. Having the human capacity to get something fixed means nothing if you cannot also get the parts you need. I've certainly been caught more than once needing to wait a week on a part, which is not a fun place to be. And this is where John Deere has focused their business: Doing more to keep parts available near to where the farmers are, so that you can get parts exactly when you need them. This is, above all else, why John Deere is the market leader.

> Farmers who want advanced capabilities might now look to build them on top of no-tech tractors with open-source solutions

I have been going down this road and am starting to regret it a bit. The saving grace is that I have found enjoyment in building a system of my own. But if I found it to be a chore, at this point I'd have deep remorse that I didn't just pay someone like John Deere for a fully delivered, highly polished solution. I know the HN crowd tends towards the DIY, but, having actual experience here, I don't see this happening outside of the small subset of farmers who find fun in it. It is a decent hobby for those so inclined, but from a purely commercial perspective the time and effort can be better put to use elsewhere.