I was thinking new devices having to pass tests in the spirit of the electromagnetic interference tests for certification. Except models having to pass the tests yearly / quarterly / any time period. Such expenses would be covered by the manufacturer during the official life of the device offered by the manufacturer.

I understand your point. What you describe is happening in Australia. Hopefully any law targetting botnets and any other in the future has a clause forbidding this behavior of banning provider not approved devices when they are technically compatible.