you do realize that these so called "one-off" AI programs would need to be maintained? Most people paying for Saas are paying for the support/maintenance rather than features, which AI can't handle. No one will want to replace any Saas they depend on with a poorly generated variant that they want to maintain
Thinking of it in terms of code is why the idea sounds ridiculous. AI won't make you a Django app and deploy to the cloud (though you can also do that), systems will be built based on pipelines and automation, integrations, just-in-time UI or conversational interfaces. Similar to the no-code platforms of today.
Most people don’t want cloud hosted subscription software, we do it that way because VCs love vendor lock in and recurring revenue.
Old school desktop software takes very little maintenance. Once you get rid of user tracking, AB testing, monitoring, CICD pipelines, microservices, SOC, multi tenant distributed databases, network calls and all the other crap things get pretty simple.
You can go further: Which business will bet its entire existence, let alone finances, to an "AI" (Companies are literally writing "don't rely on X LLM outputs as medical, legal, financial, or other professional advice"?
