So far, the utility on existing codebases is less than zero.

I'm curious what definition of "Utility" you are going by here - at the most basic level of "smarter, more context-aware autocomplete", does it have zero or negative value to a developer? Would you disagree that even an experienced developer could save some amount of time, at the current state of the technology, even if only at the stages where you're just writing code you already have a pretty clear concept of in your head?