I'm rather surprised that you can write a law calling out one particular company by name and applying solely to that one company, as the Montana bill does. How common is this?
For that matter, it's unclear if it's even constitutional. Article I, Section 9 of the US Constitution flatly prohibits bills of attainder (laws which declare a specific person guilty of a crime and/or subject them to punishments). It's undecided whether this clause extends to corporations or only to natural persons, but the possibility is enough.
[1]: https://www.arkleg.state.ar.us/Bills/FTPDocument?path=%2FBil...