We have a website and mobile apps. We are watching our revenue not so slowly go from credit card based purchases with a 2.4% transaction fee, to iTunes/Google Play purchases with a 30% transaction fee. This makes a HUGE difference in overhead for a business, and is money directly funneled straight to Google and Apple's "services" divisions.

I don't think this is going to change or level off anytime soon. Everyone wants their cut, now Visa gets it AND google/apple get it :(