Also considering that many movies are available on Pay-per-View while still playing in theaters.
Hollywood's own greed plays another part, too. Not only is it ridiculously expensive for a family to go see a movie. The studios usually release a movie on DVD in a very short time.
The big studios in Hollyweird have their fingers in the production and distribution of movies, but not in theaters showing movies4 decades or so ago, theaters and TV were the only venues in which Hollyweird's products could be shown. It took about a decade for VCRs to become ubiquitous, and even when they did, screen size and resolution were still a very large qualitative difference. Still, it was partly a new revenue stream, and partly a diversion of some revenue from traditional theaters into various types of retail/rental outlets. It's probably been only in the past 10 or 15 years that HD, flat panels, and DVDs brought in-home quality up to the point where it was a near theater experience (theaters have had their own huge technology improvements, but may have reached a point of diminishing returns, or crashed into the wall of, "Good enough").
I won't say the current situation is one where Hollyweird can say, "@#$%^ you!" to theaters, but the shift in revenue stream balance has made policies such as early release to PPV and DVD viable revenue enhancers. The big studios are shifting their business models to reflect modern home technologies, and theater companies need to do so as well (e.g. some are remodeling to more comfortable seats with motorized reclining mechanisms, to try to bring in home-like comfort). We may be approaching a point where theater-only release periods could be shortened to 2 or 3 weeks. And theater-only release revenue may soon no longer be (or may already no longer be) the gauge of whether a movie is a success.
Business model change is something Hollyweird can do and has been doing. It just shifts where/how they get their $$. Whether a dollar came from a theater, PPV on satellite or cable, or from a service like Netflix, it's still a dollar. OTOH, if Hollyweird keeps producing condescending, pedantic ideology lectures that are bombs regardless of venue, those reduce rather than reshuffle revenue. It's becoming a sort of race, how much $$ is Hollyweird willing to lose in order to keep lecturing normal people.