On the other hand, if the noble ethical goals that you list were more important for the customer, he would prefer devices that satisfy these goals (as much as possible) over low prices in his buying decision(s).
Information scarcity is a defining feature of modern market, let's not forget that.
See e.g. the right-to-repair debate. The function is important enough for farmers to demand regulation and drive the prices of old, non-locked-down tractors through the roof. And yet, it's still more profitable for John Deere to lock down their tractors.
When deciding between the packages "modern, feature-rich tractors that are locked down" or "old, reparable but overpriced tractors", the former probably win. That still doesn't imply that farmers "want" locked down tractors or that reparability is of no importance to them.
Also yes, we do need ethics in business. Last thing I've read, even some MBAs have heard of that by now.
This is in fact a textbook example for how markets work. By the insane prize increase of old, non-locked-down tractors, every sane market participant can see how much more of a prize farmers are willing to pay for non-locked-down tractors.
I believe every manufacturer of tractors now does a careful market analysis and is probably (secretly) developing a more open, but expensively prized tractor.
My bet: In a few years there will be new tractors on the market that are better repairable, but higher prized - exactly what an economist would predict. It's just that we are currently in a transformation period.
In case of tractors it's not at all obvious how fast the market will provide the tractors with lower TCO, that farmers wish for.
What you ignore is that there are a bunch of information and experience asymmetries here, some of them intentionally created by vendors. There are also big problems with short-term biases and principal-agent problems. These lead to demonstrably sub-optimal global outcomes.
As an example, look at the recent wave of Softbank-funded idiocy. There's no way WeWork was an optimal deployment of capital. You could have lit $10 billion on fire and done better. But it worked out very well for Adam Neumann, who not only got lots of short-term adulation and wealth, but somehow ended up becoming a billionaire because they paid him to go away. And this is from the supposedly hyper-rational experts in the world of finance. If they can't get it right, there's little reason to think that random purchasers and Tektronic's middle managers will.
Right, and it delivers that by pushing costs onto the greater proportion of people who are not involved. That is neither ethical nor sustainable -- it's more like a kind of theft.
What you are citing is a clear example of how the "free market" can fail to operate in the best interests of society.
The customer wants machines that are more difficult to maintain and repair?
Is the customer a masochist?