word choice - "As is the case for" vs. "As is the case with"

A little search in Google Books indicates both are commonly used, but I cannot see any semantic difference:

Scholarly research can show how government subsidies benefit mostly the rich, not the poor, as is the case for gasoline subsidies in the Islamic Republic of Iran.

As is the case for most newly introduced high-tech services, crowdsourcing raises both hopes and doubts, and certainties and questions.

The important point to stress is that a radar imager, like a bat, principally obtains information as a function of distance from the instrument, rather than look direction, as is the case for optical systems.

Keeping confidentiality may result in future harm to some identifiable person other than the patient, as is the case with the prostitute and her boyfriend and the drug-treatment patient and his girlfriend.

Of the others, uncombined carbon burns with little or no flame, just as is the case with pure charcoal and coke.

My best guess is: with "for", it introduces the direct object for comparison; with "with", it introduces the scenario for comparison. So in practical terms, there's no salient difference between them. Do I get it right?

Answer

As is the case with... means as is also true about... If this is the meaning you are looking for, you can always use with. With could be used in all of the examples in the above text; I personally would use with instead of for in all of them. On the other hand, with and for are pretty much interchangeable here.

Now, the case for also has the meaning of those facts that support a case. So, you might say this:

The case for using with in all of the examples above is consistency.

I'm saying here that consistency is a reason to substitute with for for. The case with... would be incorrect in this situation.