"Gee, why doesn't Google not sue people who created their own MapReduce (which Google has a number of patents on) implementations?"
Of course the problem with that is they don't sue others who use MapReduce, because while they aren't perfect, Google is pretty good about not abusing the legal system (unlike quite a few tech companies I could name).
If Nokia was making $60billion in revenue and $12 Billion in profits, like Google, than maybe. Bottom line is that every company has to do what is best for them, no go along because another one said so. Since things at Nokia aren't going as well, patents might been as having a higher priority. Nokia and others have spent decades inventing stuff about phones.
Google is doing this because they see something in it for themselves, make no mistake. The true intention will show a few years down the line.
"Gee, why doesn't Google not sue people who created their own MapReduce (which Google has a number of patents on) implementations?"
Of course the problem with that is they don't sue others who use MapReduce, because while they aren't perfect, Google is pretty good about not abusing the legal system (unlike quite a few tech companies I could name).