I don't know the nature of the regulation, but if all it demands is that the lid is locked while it is in operation, then I don't see the need for complex electronics at all. When the motor is spinning, lock. When the motor stops spinning, keep locked for 10 seconds. This can be done with cheap electronics known to work for 100.000 hours, more than enough hours for 30 years of service.
You're right that the electronics are cheap but they're still the first thing to break since they take quit a beating. They might last 30 years in a vacuum but not in a washer.
If you're willing to live without a lock or spend a few bucks for new parts then you can keep your machine running perpetually but you basically have to buy an old or commercial unit for the availability of parts.
