You really think Comcast/NBC is going to lose a lot of money over this??? The gov't may have granted NBC use of the airwaves but once it is on a private system, that is different. But also, since Comcast/NBC owns the network broadcasting those ads, they are free to choose who they allow and who they don't.
Yes, they are free to choose I was never against that. What I don't want is the government to get involved in the matter because the result would be much worse than a few blocked gun ads.