Did you ever build a commercial project or any business yourself? The nature of your comment implies to me you haven't. I highly recommend you give it a try, it might actually change your mind!
Trust me I would have loved to throwaway this dependency on these platforms, I don't enjoy paying for ads. The market is not pretty, but there's a reason for why it's the way it is. For some reasons, players prefer downloading games for free and then paying potentially hundreds to thousands of dollars on IAPs, rather than everyone paying $5 for a game. I would have preferred it to be the latter personally, but the market doesn't seem to want to act this way.