I'd argue that the NRA is an outlier, because of how closely it's tied to specific companies with a profit motive. This provides a stronger and more persistent organizational backbone then usually found among just concerned-citizens.

Depending on what Congress does, they don't even need to wait for the policy to be enacted before it could be affecting their sales, stock prices, and executive compensation.

In contrast, there aren't any companies who are so directly financially tied to the First Amendment. Oh, sure, it's a public good, but you can't sell free speech the same way you can sell guns.