I know they are fazing out Disney and Marvel because of Disney +. Not sure about others.
Lionsgate is going to Hulu and FX when Epix deal expiresStudios license their content under two categories...The ''Pay 1 Window'' is the period that new theatrical films are licensed to pay tv services (HBO, Showtime and yes Netflix). This begins 4 to 6 months after a film arrives on home video, and the availability period has usually averages 5-6 years for the service that hold the pay tv rights-but varies and is not continuous for the entire 5-6 yrs (normally after 2 years of a recent films debut on pay tv, the film is removed from that service and is licensed to basic cable networks. After a year or 2 on basic cable that film returns to the pay channel/service in... The ''Pay 2 Window''. Same, recent films, returning to the service that 1st aired/streamed it.
Then there are the ''Library Titles''. Movies that have passed thru Pay 1 & 2 windows and are licensed non exclusively to both pay tv and basic cable, rotating round and round, from one to another...
HBO owned by Time Warner-now ATT, gets Warner Bros new/recent films, plus WB owned New Line Cinema, and has newer titles from 20th Century Fox under a long term exclusive license. Universal's newer movies are also licensed to HBO...
Starz is now owned by Lionsgate, and it has recent Sony/Columbia movies. Lionsgate's new/recent films are currently licensed to...
Epix, formerly owned by Lionsgate, Paramount and MGM, and now solely owned by MGM (PAR sold off its stake last year, as did LG after buying Starz). Epix carries recent films from its former parents, but will lose Lionsgate theatricals to HBO when its current deal expires. (odd that they would bypass their own Starz in favor of HBO, but its a 2 year deal, so short term cash grab before adding them to Starz most likely)
Showtime (owns The Movie Channel, and Flix), is owned by CBS, and has exclusive rights to...CBS Films, IFC Films, STX Ent, Global Road Ent, and Amblin(?) Can't think of any Amblin title off the top of my head. .
Amazon. Amazon licenses a package of films controlled by Epix. Epix sells the same package of movies to Hulu as well. These movies run on Epix first, and then several (used to be 90 days back when Netflix also carried them) months later, provided to the other 2.
Hulu, formerly owned by Fox, Comcast/NBC, Disney with Time Warner buying in a few years ago, is now under full Disney control. Their main movie offerings have been thru the Epix deal mentioned. Plus they carried The Criterion Collection. Not sure if they still do with Criterion wanting to launch their own streamer after the demise of Filmstruck, co owned by Time Warner.
And lastly, Disney+, which will carry their recent theatricals starting with Captain Marvel. Disney films currently on Netflix will remain until their pay tv rights laspe (individually, one at a time- they all won't get Thanos snapped away at the same time. They'll also return to Netflix in another 5-6 years).
Older movies owned by the 5 major studios are, for the moment, still licensed to multiple outlets with no barriers depending on service ownership.
Hope this helps sort things out.