Isn't that what Hulu subscribers did? They went to a company that dug a hole, stuck their heads inside, but now the hole inspectors have come and demanded that Hulu fill it in because nobody should be allowed to stick their head in a hole. As far as I'm aware, nobody's argued that Hulu has special characteristics that make it uniquely important to politics. The advocates' argument is simply that all platforms should have political advertising because politics is very important.