Why are there suddenly so many Liberty and conservative movies rather than liberal?

I’m not sure how conservative vs libertarian most of these movies are since I’ve yet to see any of them. It just seems like a huge change from the norm.

The ones that come to mind are:

Last ounce of Courage

2016

Runaway Slave

Atlas Shrugged 2

I’m just wondering what caused the change, is this just the market reflecting public sentiment? Maybe the Citizens United decision influenced it? Something else?

All those films look abysmal.

Some people observed the success of Michael Moore and other ‘documentarians’ and emulated their approach, but with different biases and audiences in mind.