A question of timers electronic or mechanical.....
The image I am about to post is from a Modicon industrial controller.
This one is a good example of excellent build quality and reliability.
Its from the 800 series that were developed in the 80s. ( called the 984 family)
Iv'e seen these keep on running covered in filth and dust in hot or cold environments for years without missing a beat.
Build quality gold plated contacts, large heat sinks, lots of screws and bolts to hold parts together conformal coatings to prevent corrosion.
This could run for decades and did ( and some still are ).
Quality industrial controls for commercial applications can and are made reliable and long lasting.
https://shop.metallogics.com/products/modicon-lr32678-800-series-10-slot-plc-rack-with-modules
Here is another old timer.
A KB drive motor drive form 30 years ago.
Same build quality robust heat and dirt tolerant and long lasting.
Also a product of the 1980s still made today.
https://sbindustrialsupply.com/shop/new-kb-electronics-kbic-120-dc-motor-speed-control-kbic120/
Quality long lasting electronics and motor drives can be made.
How many of you had a SONY Trinitron TV set?
Lasted and lasted with good picture and it did not meed the TV repair man to come to your home and tune and adjust it like an RCA or other contemporary.
All these companies ( some like Modican no longer exist ) made good electronics designed to replace electro-mechanical or non solid state devices.
They owned the market because people knew what to expect and would pay a premium for it.
But also there was competition to apply pressure on the manufactures to up their game if they wanted to keep that market.
Now ?
How many manufactures exist to build appliances ( I don't mean brands )?
What do you pay for a durable good now compared to decades ago?
Could you build a 30 year life into a washing machine using yes but what would it cost and if you could still charge the same would you bother because you had limited competition?
How hard are they working to compete?
I don't know what to tell you.
I work in heavy industry and I see modern industrial controls now are built like washing machines.
We replace and scrap them out all the time.
They have features I really don't want or need and do things that do not significantly improve productivity ( but the computer geeks like them, I think the rapid churn of technology is what gives them job security)
So I have no answers
But like I said good stuff was out there.
This silly little PLC I have to grudgingly respect.
Its small modern, and does seem to last.
Why are they not built into washing machines?
They are not expensive and they were designed for these kids of applications ( used in vending machines as well as industry )
This is a very basic version but there are expansion kits and versions with more or less options...
There is no excuse for bad electronics in washers unless that was part of the plan.
So as much as you like the idea of transmission, drives can eliminate all those gears and oil and simplify the tasks of moving the drum and what ever means you like to wash.
Quality bearings and seals that are cheap and easy to change are available.
Inexpensive corrosion resistant steel where needed and plastic where its not can keep costs low.
Still not a cheap, but quality easy to fix machine with parts you can buy for the next 30 years is completely possible and in reach of that was what the market asked for.