What’s “too cheap” in your situation is the highly automated, continuous conveyance, mass production line that can take in parts by the container load and pump out fully-functioning dishwashers for less than a week’s wages.
What is the basis for this assetion? What data or information have you used to come to this conclusion?
The last appliance part I bought was the motor for my gas dryer. Several parts places had it. Amazon had the best price by a small amount and I got an exact fit OE motor in 2 days for $114. A year later, that price has soared to $109 and is now available for next-day delivery.
How much less do you think it should possibly cost to be able to order an exact fit ~10 pound, ~1/3 HP dryer motor on a Sunday for Monday delivery? $109 seems like an incredible bargain to me, even if Amazon and Frigidaire pocketed $20 each of pure, obscene profit.
https://www.amazon.com/dp/B0053Y3A8M/ref=cm_sw_r_cp_api_glt_...
Problem solved.
If they all had to provide all the parts at a reasonable cost, they'd figure out a way to get it done. I'm sure Siemens, say, can figure out a way to ship a part by part number efficiently, considering its already on a shelf somewhere.
And if you a company don't want to pay for that? Use a standard part. Now it's not your problem.
It'll never happen, but it's nice to think about as the world drowns in piles of ruined single-use equipment, while the money spent on replacing them flows endlessly corporate pockets.