If I had to guess..? Live Photos requires good UI design to make it useful and easy to use and you can bet that Apple has patented the existing (novel) UI for

If I had to guess..? Live Photos requires good UI design to make it useful and easy to use and you can bet that Apple has patented the existing (novel) UI for Live Photos on iOS. So Google has to a) come up with a just as good way of doing it b) do it in a non-infringing way and c) do it in a way that doesn't feel just like a copy-cat and damage their brand. Google is not great at UI/UX (they're not bad, just not great, they're solid but it's not really their focus) so I can imagine this presents a compound and complex problem for them with all the other factors added.