Comment by Qwertious

"Cash for clunkers" only made sense because they weren't fuel efficient. If old devices are insecure, then the only sane long-term solution is to incentivize long-term device security.

We already have 10-year-old devices which are perfectly performant for their tasks but are being turned to ewaste due to lack of support, rather than any material need. Moore's law isn't coming back, devices will have longer and longer performances relevant lifetimes from here on out, and if the current market doesn't support that then it's the market that's broken, not the devices.