Don't compare it to advertisement, compare it to the medium that contains the advertisement.
Some TV is advertising. Some TV is the shows you wanted and got the thing for to begin with.
The goal isn't to eradicate the medium, it's to get rid of the ads, or at least limit them to a reasonable and regulated set of public service announcements.

The problem isn't your right to petition the government. It's that it's easy for a business to likewise petition them, and they can make it clear that people who support their policies often get seats on boards with nice perks later, when they're out of office.

You want to keep your right to petition. That's called lobbying. Outlawing lobbying is saying it should be illegal for you to try to get your representative to vote in a particular way.