It's backwards because, if this trend continues, every publisher is going to be supporting x different versions of y different platforms. iOS 2,3,4 + android 1,2 + chrome + mozilla ... etc.
Standard web development has it's own support problem (browser discrepancies). But that pales in comparison to what supporting all of these store platforms would be like.
Standard web development has it's own support problem (browser discrepancies). But that pales in comparison to what supporting all of these store platforms would be like.