Mobile phone platforms are reverting back to the pre-iOS/Android reality where you have to jump through tons of hoops to even make an app let alone run a viable business with it.
AFAIK in some countries (US?) phones were usually sold locked in a sense that you could only install J2ME midlets published by your mobile provider, who'd nickel and dime both users and devs for the privilege.
It feels like US companies have long given up the pursuit of new innovations, and are now innovating new and creative ways to rent seek their own customers.