What are some of the implications? Where does widely available mythos-level hacking lead? By people with a vested interest, do you mean non-cloud software vendors?
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.
Software that had a data moat because it was hard to integrate with or migrate off of will have that moat disappear. A web site is a client now. Building data migration too for all of you competitors is easier now.