JB’s wheelhouse is human-oriented code authoring, they own it. That realization is the fundamental reason they abandoned Fleet: as with VS Code and others, Fleet was draining their talent and would have resulted in a tool that wasn’t best-of-breed in any one category.
This situation reminds me of the beginning of the end of Borland’s demise: they spent nearly two years writing OS/2 versions of all their language products, suspending innovation and progress across the board, and allowing the competition (Microsoft) to catch up and begin to hire away their talent.
This story doesn’t perfectly align with JB, but it definitely rhymes. I hope they switched gears soon enough.