> Now you could say a piece of software completely written by a coding agent is just another abstraction

You're almost there. The current code-generating LLMs will be a dead end because it takes more time to thoroughly review a piece of code than to generate it, especially because LLM code is needlessly verbose.

The solution is to abandon general-purpose languages and start encapsulating the abstraction behind a DSL, which is orders of magnitude more restricted and thus simpler than a general-purpose language, making it much more amenable to be controlled through an LLM. SaaS companies should go from API-first to DSL-first, in many cases more than one DSL: e.g. a blog-hosting company would have one DSL for the page layouts, one for controlling edits and publishing, one for asset manipulation pipelines, one for controlling the CDN, etc... Sort of IaC, you define a desired outcome, and the engine behind takes care of actuating it.

I agree. Additionally, a company can own and update a business language of their own design at their own pace and need. Then they can use AI to translate from their controlled business language to the DSL needed (translation being an area it actually does well). In this way the LLM would only ever be going from General -> specific, which should keep it on the rails, and the business can keep its business logic stored

Now that said, there is still the actual engineering problem of leveraging the capabilities of the underlying technology. For example, being able to map your 4 core program to a 16 core system and have it work is one thing, actually utilizing 16 cores is another. Extend to all technological advancements

I like this direction, but I worry about developers involvement in the design of the DSL becoming the new bottleneck with the same problems. The code which becomes the guardrails cannot just be generated slop, it should be thoroughly designed and understood imo