I'm actually open to this argument for larger things that last longer and are less internalize-able, because the friction in the market starts to overwhelm its efficiency.
But dishwashers are not that expensive that you're stuck with them. Buying new, cost is less than most new appliances and similar to a phone, less than a laptop. The used market is so soft that, even in my LCOL area (with consequently tighter Craigslist market), I bought my 3 year old stainless steel dishwasher for $150. All this to say, you can bail on your dishwasher if someone starts selling one that is extraordinarily better than everything on the market.
As another thought exercise, you have apartment complexes or apartment buildings (working in hand with national or regional builders). These parties have the time horizon, large sample sizes, accounting capacity, and concern for costs to know the absolute best option for appliances in terms of how often maintenance is required and how much it costs. They're a large enough buyer, at least collectively, to constitute a market. Despite all this, the dishwashers in apartments where I've lived or visited seem exactly the same as the ones in friends homes. Why don't apartment complexes use low maintenance dishwashers? My suspicion is that they're complex machines with heaters (highest wear), pumps (high wear), and pressurized water in close proximity to electronics, built to a standard so they can be affordable in every US home.
But please, make it better. I like paying extra money for things built with engineer driven design.