I think you're being facetious, but even so, dropping basketball would be costly. While not a huge amount, you'd still lose your share of NCAA tournament money. And while a long shot, there's still the possibility down the road of the Big Sky getting an at large bid and/or winning a game - thus meaning more money.
That wrestling conference, by the way, is probably going away. There's talk that what's left of the Big 12 wrestling schools will absorb those teams under the Big 12 wrestling banner. Similar thing happened with the Pac 12. There's only 3 Pac 12 school who actually wrestle, so they have affiliate members like Boise.