This is a mischaracterization:

"Big business on the other hand are seen as the underdog 'Rebel Alliance' of sorts - kindly, well-groomed, altruistic folk who want to set the populous free and invest in clean energy. Added to the mix is a CG plane crash, anti-capitalist and pro-gun one-liners, uplifting music and a young female entrepreneur fighting for her right to make profit."

Individuals aren't "big business." The film follows Dagny. And I certainly don't remember any pro-gun lines.