Re: I thought this case was against Apple?
I suspect the store lock-in is worse on Apple than Google.
Whilst I buy apps on Google app-store they aren't expensive and very few. eBooks I buy elsewhere, music I don't buy from Google, or video. AFAIK Google doesn't take a cut on movies, music, books I buy on other services but watch on my phone. Google also doesn't particularly encourage me to use their services to buy those things (I get directed to YouTube alot but then thats free to me other than the annying ads).
I believe Apple are much more aggressive in directing users to their own services for Music/Video/eBook purchases. Apple were also first with decent smartphones / tablets and got iTunes front and centre and many users were already locked in from the iPod.
Its the same as MS directing me to the x-box store for games on ,my Windows machine.
Only way to stop this is to ban vertical integration between the hardware/os platform vendor and the services vendors.
I swore never to give Apple a penny ever many years ago when they snuck iTunes onto my PC alongside a QuickTime download, and it immediately decided to reindex my carefully curated .mp3 collection. I then had to hack the registry to remove traces of it. Its that kind of thing thats unpleasant.
P.S. Don't get me started on Apples insistence on their own version of the USB-c socket. Idiots.