As ever, some great analysis of data by Horace:

Samsung’s success is dependent on having ridden on the back of Android. [...] Meanwhile, indications are that “mobile” is causing a contraction in Google’s margins.

I think the story here isn't that Samsung is making more money from Android than Google is, but instead that as Google enters the mobile space further, their margins decrease. This seems counterintuitive and can't be a good sign for the company.

We know that Google makes significantly more money from iOS users than from Android users. That fact, coupled with this new revelation, seems to indicate an unpredictable and worrying future for the platform.

As Horace concludes:

If nothing else, Android has created a very interesting industry.

Very interesting indeed.