It was never going to work. It's as simple as this: ND as a school would much rather be on the east coast than in the plains, and even more than that, ND would much rather associate with a string of elite schools, both state and private, than with Texas and a string of non-elite schools.
And because ND was involved, there was 0 chance any school not in as awful a shape in sports finances as Maryland would leave the ACC.
Dodds tried, but the task was impossible. What I think Dodds succeeded in doing is laying a foundation so that if Texas wishes to join us in the ACC, the deal will be done with no snags.