(speaking at least for myself) I'm not suggesting this is a good outcome, more that having seen the way many companies handle development and IT, it's quite a likely one.
FWIW I'd agree that (for now at least) it's challenging to get LLM/AI created code to avoid security vulnerabilities without careful prompting and review. Whether that's a fixable problem or whether it'll just generate mountains of new CVEs, bug bounties and ransomware attacks, remains to be seen.