I posted an article describing the "why" a month ago. Totally not surprised that the current reform efforts exhibited the same arc.
That general model is exactly why this initiative collapsed as well. Several aspects of this reform - such as "attributable owner" rules, i.e., implementing laws that require patent applications to reveal the real party of interest in the case, as a measure addressing shell companies - were supported by large interests that benefited from them, and opposed by large interests that didn't. The result is stalemate, just as we've seen countless previous times in the patent "reform" discussion.
The only measures that make it through the "reform" system are mild improvements that don't affect some entities differently than others. And even those can be difficult - e.g., the first-to-file change in the America Invents Act is great for well-funded enterprises, but more problematic for small businesses. In that case, large enterprises simply steamrollered the opposition with lobbying cash.
The upshot is that the "reform" sytem is, itself, deeply dysfunctional. An additional tragedy is that efforts that would objectively improve the patent system for everyone, such as giving examiners more time to perform their examination and implementing more accountability for technically incorrect arguments, get lost in the struggle.