Adversarial interoperability is at risk should the circumvention argument be entertained by the court. Don't want a competitor making something compatible even

Adversarial interoperability is at risk should the circumvention argument be entertained by the court. Don't want a competitor making something compatible even though they are legally allowed? Just protect it with "effective" measures and they aren't allowed to even try to be compatible? The Switches system1-6 crypto schemes weren't terribly good. system5 even weakend it drammatically and trapdoored them into being permenently weaker. Problem is what constitutes an "effective" anti-circumvention according to the DMCA is not defined.