End of the day you're still at the mercy of apple's algorithms and policies. If one day apple decides your app isn't worth it and the purchases and downloads slow to a crawl, you'll be taking note that the tax you're paying isn't worth it anymore. You'll search around but realize all the platforms do the same thing and regret it.

Competition for small business like yours is a good thing and you should be earning more compared to the big platforms because you bring in the customers, end of story.