I can think of a few solutions:
- support model. You pay 1/10th the manufacturing cost per year. They immediately give you a new one if it fails. Profits are dictated by the difference between the real mean time to failure and ten years. “10” is set by law.
- the price of the machine includes the cost of supplying the above service contract for 30 years, by law. The price of the machine therefore drops as the reliability increases.
- all machines must be 100% recycled by the manufacturer, who also pays for environmental externalities. They pay a prorated multiple equal to the number of years under 10 that a machine is in service before replacement.
- warranties must be 10 years and renewable, and must cover parts, labor, and installation, including things like modifications to cabinets and and legally required code improvements
Not everyone would buy a new fancy machine the same year, so in steady state, they should be able to sell machines, just fewer per capita than today.