> insofar to the best of my knowledge there is no fundamental workaround

May I introduce you to the steel wheel rolling on a steel rail?

Not frictionless, so it will also slowly degrade over time. It just has so much mass built-in that it’s not obvious.

But, critically to the conversation we're having, does not produce harmful particulates when it does so.

Yup, make a rail to everybodys home instead, that will solve it.

It's worked before