In Norway it's forbidden with political ads on TV . Reasoning being that live images can have a huge influence, while also possibly being inflammatory and dumb down the debate. But main reason mainly is that it would give those with enough money to afford these "expensive tv ads" a leg up. However, this law hasn't been updated in decades. So it's still only TV ads that's illegal. So it feels like a quite arbitrary re…
I think the main reason for rules like this is because it's literally politicians and political parties shoveling huge amounts of cash to the media, and 1) one of the purposes of the media is to inform people about politicians and politics, and 2) the politicians who are elected will oversee the media and their mergers. An intimate relationship is created where democracy demands an adversarial one.
It's rotten. It's the same reason no media can criticize any drug in the US, since they were allowed to advertise to the public. I'm sure there's some value in having people ask for specific drugs from their doctors, but that's minimal; the main value is being immune to any criticism unless an e.g. television station wants to lose 20% of their income.