You know this is one thing I don't get about studios these days. Home video sales are way lower than they were in the 90s and 00's, yet they are much quicker to rush their films out on home formats in 3-4 months. You'd figure with most people opting to wait until they can stream the film on Netflix or something rather than pay $20-30 for the dvd or bluray, studios would be trying to milk the theatrical releases for every dime they can. A great recent example is Frozen. It ended up being a smash hit and had incredible legs. It was still playing in well over 1000 theaters at the time of its home release, and made $2 million the weekend before. Yet, the film was released and definitely lost a few million bucks thanks to that.
Tl;dr with nobody buying DVDs and blurays like they used to, I don't get why studios don't make more of an effort to hold off on the home release for a while and find ways to extend theatrical life.