Earlier quoted context omitted.
In terms of UX and as a consumer, I'd rather the Dropbox API not open a browser or even another app. That is not the best UX, it doesn't provide a security advantage, and it's simply not being done to benefit the consumer. This may not be Apple's primary rational for rejecting these apps, but I'm glad they're doing it. As for the payment question, simply in terms of UX and as a consumer, I want only one payment provi…
I'd rather Apple give developers the choice and let user preference sort it out. In the long run the open market always wins.
I've never seen an open market in the wild, much less it "always winning".
You mean an open market like the "$1 trillion bailout not to collapse the whole economy" open market? Or an open market like "we enforce strict copyright laws to artificially limit each copyrighted product to one maker and it's pricing at his whims"? Or an open market with patents, for the same purpose? Or an open market with frequent cartels, to everything from dairy products to RAM? Last, but not least, an open market where a country with a military advantage has several army units deployed and several wars to secure resources and keep their prices down?