Right now, software is protected by the attacker not having enough competence. If that's over, the logical next step is using real encryption.

E.g. a synth has a public key embedded. To change settings, you upload them to the vendor, who blesses them with their private key.

Hacking such a synth requires either jailbreaking the synth, or the vendor losing their key . Both can be mitigated with tamper resistant hardware.

We're well ahead on this path already, I assume AI will accellerate it. This is very bad news for the right to repair.