Google play is rubbish.
Problem with Google is google.
The OS is still in it's infancy. I had my transformer prime away from the internet for a week in July and very quickly it becomes unstable, in less than a day updates were required to make it run, three (file explorer, mobo player, docs to go full) apps broke including the office apps and needed reinstalling. So as a business tool it just isn't there, or remotely stable enough to warrant replacing laptops. Whether app writers haven't updated to 4.0 or whether the OS just can't live without touching Google servers, either way my eee PC of four years is still the favoured choice for functional work.
I have to have 2 office apps installed (so they work) but to copy and paste between documents, you can't copy and paste from 2 docs inside dosc to go for example.
Android 4 doesn't do sound via usb so you can't do any of the add ons or peripherals that Ipads have, or that I have for my eeePC. As a result my Transformer Prime is limited to crap speakers (stereo speakers on the same side of the machine is not stereo). Google turned off the feature but the code is there and they are ignoring the 100s of people pleading on their bug / feature list.
Most of the lower spec systems don't do google play at all. you have to really be keen to install it on some.
15 minutes refund period is a joke when you consider half the rubbish that is in there. And market forces are not a good a good way to run a business of that sort. I have been scammed a few times buying fake apps and so don't trust anything on there now.
Most apps are just money grabbing exercises and I have stopped looking, One game (can't remember which but it is a recent) is commented as needing £300 if you buy all game purchases, and strike fleet omega is around £200. Anything from Glu mobile is a scam for cash and that is the norm, so who would seriously go looking for apps for any length of time.
Quite a lot of apps now have started grabbing phone details, privacy is a joke. Why else would elemental need to know your phone details? It is sodoku, what reason would it need contacts and phone details? The whole thing is fishier than Whitby.
Too many devices don't work with apps from google play, too many devices are listed as problems in app comments. Newer ones are not supported yet and apps quite frequently no longer support the older ones because dev's move on. (HTC desire is no longer supported for example in some apps that I have)
I like my transformer prime (Despite it being crap away from the internet) and hate all things Apple, but as a fondle slab I only use google play rarely to update my apps, I haven't got a new one in months because the whole site is filled with junk and viruses that just want your money or personal details. And my foray into the Amazon site is that it is slow and clunky and not very easy to navigate, so it is easy to see why Apple still leads by a mile.