What they are doing is pretty frustrating but they appear to be doing it pretty well. Copying an existing business is not always trivial so I suppose they must

What they are doing is pretty frustrating but they appear to be doing it pretty well. Copying an existing business is not always trivial so I suppose they must be doing something right. Now if they were churning out half-assed businesses just to capitalize on something that is currently trendy/popular then that's a different story. Just look at the Android market, it is full of copies of original indie games that came out on iOS first.