Subreddits have both too many rules and mods, which breeds corruption

I am a record label owner that publishes music to online streaming sites. My goal is to get as many people to hear our music as possible. I understand that Reddit may not be intended for music promotion, but I also notice that a lot of music makes it to the front page, including indie music and it makes me wonder why a lot of other music doesn't. Is the system corrupted? Are mods the ones who made the music that gets upvoted? It seems like mods only let certain posts past the threshold for voting, where on Reddit, voting is presented as a "quasi-democratic" process. For example, if a candidate is prevented from ever making it to the primaries, they'll never stand a chance to be elected, or even heard about, by the public. I won't name the specific subreddit (sub-forum) on reddit, but the majority of the posts I have tried to make to it get declined based on title formatting, and rules against promotion that seem to be selectively applied, even though I follow all the post rules and rarely post within the subreddit. There are many other forums as well on reddit where posts get removed for silly reasons, which also creates a bit of unfairness in the overall outcome of what people see. It's extremely frustrating. Pretty much every independent music site I've been on since Mp3.Com turns into a Multi-Level-Marketing or other status scheme like Amway was back in the 80s. A lot of people don't know that this is happening behind the curtain, and others simply don't care, but this influences the entire future of how the Internet will be used in my opinion, and it also breeds corruption. We still have yet to kill pop-ups, because evil people make the rules now. Fight the power. My question is, why do subreddits have so many rules on posting if downvotes and moderators are there to prevent forum misuse?