In past decades the "firewall" of software is that advanced security and coding knowledge is not very easy to access by anyone, only a few smartest people in the big name companies and top orgs. But nowadays, knowledge is accessible to everyone if you use top LLM, which swipe the difference. I would say that future public software is unsafe anymore. maybe the concept of public software (like SaaS or other) will be dead, software is only private instead of public