It's the same issue that killed the image-based programming in favor of edit-compile-run cycle we're all doing. "How do I test? How do I do version control? How do I migrate?".

These are valid concerns, but $deity I wish we focused on finding solutions for them, because the current paradigm of edit/compile/run + plaintext single source of truth codebase, is already severely limiting our ability to build and maintain complex software.