The movie studio could become a money earner, if handled properly. "Faith based" films still have a market, examples being Passion of the Christ, and more recently The Sound of Freedom. The trouble is that the rarified atmosphere of the Bethel echo-chamber has produced a completely tone-deaf "creative class", such that they wouldn't know how to produce a movie that wouldn't piss off 99.99% of its target audience.
They've got subject matter that could translate to movies. They are always proud of the stances they've taken in the face of government disapproval. The trouble is, anything they've done in the past that could be depicted as positive influence on society is inevitably nuanced in negative ways.
They could make something about the Judge's going to prison for fighting for free speech and freedom of religion rights. A period piece handled properly (with the truth about the Judge heavily massaged) could be an interesting watch. But the WT these days has distanced itself from the Judge.
They could make one about the young JW men who resisted the draft and went to prison as consciencious objectors. Clean cut JWs struggling against the chaotic backdrop of the 60s (with some of the music from the time strategically dropped in!) might work in a film. But then people who actually went through it, like Terry, will emerge from the woodwork and tell their true story. And the whole Mexico/Malawi thing will come up.
They could go into full-on history rewriting mode and tell the their own version of Sound of Freedom, say the story of a fearless elder (or CO/DO) who hunts down and weeds out paedophiles in the organisation. Heck, since they're rewriting history, why not invent their own internal unit, along the lines of the HLC, that hunts down those guys? While it could make for a great movie, the outpouring of reality from the internet and other sources would destroy it within minutes of its release.
Let's face it, simply owning a state of the art movie production facility isn't going to help them much. Any attempt to make good, saleable movies is going to collide with their own history and their own rules.