[sokoloff]

There’s an initial condition problem though. It’s unreasonable IMO to retroactively create a new obligation of $25 times every phone Samsung ever made. It seems like you’d have to assess the core charge on new sales as of some date (especially if your stated intention is to encourage the design of longer-lasting phones).

If you agree to that premise, now the store has to have a way to figure out whether a given phone has a core charge refundable from the manufacturer, whether the phone is genuine, etc in order to not have the core credit they paid out rejected by the manufacturer.

[ocdtrekkie]

That's true. Laws about ex post facto are pesky, especially when there's a dire need to address a massive oversight of harm. I almost wonder if there'd be value in government subsidizing the return of old phones to ensure they're disposed of properly, and maintain the simplicity of a return system, but I don't know if the cost of that program would be on the scale of "government budget rounding error" or "defense spending on the F-35".