Yes but at the end of the day all they can do is use that money to try to convince other voters to choose to vote their way. The power to convince is different

Yes but at the end of the day all they can do is use that money to try to convince other voters to choose to vote their way. The power to convince is different from the power to flatly override the wishes of others. If you start trying to equalize the power to convince, now you're upending the entire media/journalistic system (where reporters and filmmakers and celebrities have far more influence than normal people) as well as the economy.