i strongly feel that the downfall of Google has started. The company hasn't come up with anything as meaningful as Adsense.
All the other efforts they are doing, haven't been able to generate much of revenue or profit to talk about.
And, they still don't care about Adsense publishers.
I think, they have exhausted the adspace already and they can't put any more ads. So, the profits won't soar as they were doing for past few years.
All good and bad things do come to an end at certain point.