Point?
Apple attempted to create a social network and failed miserably. Ping.
At least Google+ is actually growing. It cant be denied that Apple quite simply sucks at online services. Google has a lot more experience in that field, and suck when it comes to hardware.
Apple is great at hardware/software and creating an ecosystem around that. They are crap at online services.
Google is great at online services as evidence by a large number of hugely successful ventures. They suck at hardware (Google TV as an example) and aren't exactly great when it comes to creating usable software (Android fragmentation).
Both companies have their strong points and weak points. Heck if they were actually put together they would probably create something amazing.
Go back further to eWorld.
Online services don't fit into Apples ecosystem , ping was an attempt to get iTunes users to encourage others to try/buy more music based on what ever. It would have been a better fit with Facebook or some other system as it would have probably bought in new users too.
Google is a search engine. The (Only ?) product they sell is you, i.e. your anonymised aggregated data they use to get advertisers to part with their money. The more information they can get on you the more targeted the ads (and search) become, thus making your data more valuable.
Google+ may have a lot of "users", but they don't spend much time there, it is NOT a success story (yet?), Facebook has a far better user interaction statistic.