It seems like there's a market opening here for a third party App Store equivalent, that offers the single-point-of-payment / ease of upgrades advantages for th

It seems like there's a market opening here for a third party App Store equivalent, that offers the single-point-of-payment / ease of upgrades advantages for the consumer, but eliminates the developer pain points (sandboxing and paid upgrades). This is viable for as long as third party applications can still be downloaded and installed outside of the Apple App Store.