The more I have thought about this, I have come up with a different take. Let's say UConn was getting $1 million per year for women's basketball. That works out to ~$83k per AAC basketball school, which means the money really didn't matter to the other schools. Even if the AAC took $2 million per year less on the contract to exclude women's basketball, that amounts to $166k per school per year. I really don't think the other schools would want UConn to leave over ~$100k per year per school.
Plus, I think too many people have made too much of the ESPN+ part of the deal as more sports are going streaming and bundled cable packages are not the future. Big 12 entered into a similar contract with ESPN.
I think the real issue is that Aresco didn't think the ESPN+ component of the deal (streaming) was a big issue and he didn't think there was much of an exposure issue of watching games on ESPN+ vs SNY. In fact, for those out of market, ESPN+ makes more sense to purchase than SNY as there will be a lot more content. And please, some people need to stop with the "ESPN+ can only be watched on my computer" nonsense. By the time the AAC contract starts, it will be widely available by a couple of clicks on your TV.
Bottom line, the AAC media contract was not lucrative enough to keep UConn in the AAC. If the deal was $15 million per year, I think UConn would have stayed in the AAC.