Of course, sometimes you increase prices just because you can. Whoever it is wants more of what you can make and cannot get it elsewhere: you’ve got them over a barrel so why not gouge them? Often you can do this but you don’t: you’d prefer to be long term greedy, not short term. For if your desperate customer realises that you’re gouging her then she’ll be looking around for another supplier for the future. Possibly even going so far as to encourage the setting up of a competitor to you.
So, what might encourage Samsung to go for the short term greed rather than the long term type? My suspicion is that Samsung is realising that there’s no long term relationship available with Apple any more. There is of course the multi-continental fight going on over Android and the design of phones and tablets. But more than that, Apple has been disengaging from Samsung as a flash memory supplier, even as a screens supplier. To the point that there are rumours that Apple has been bailing out a Sharp plant in order to ensure that supply from some, any other than Samsung, company.
There have also been stories around that Apple is looking to either bring inhouse the chip fabrication itself, or to look for another fab house to bake them. Apple already does the detailed design of the chips with ARM providing the basics of the core. In the medium term, over the next generation or two of chips, it wouldn’t be all that difficult for Apple to farm it out to someone else, the physical construction of the chips.
Which is where my supposition about Samsung comes in. They’ve realised this is the direction Apple is going in. They’re going to get dumped as a chip supplier sooner or later. So, why not make the most out of Apple while they’ve still got the contract, while Apple cannot in fact go elsewhere? Be short term greedy because they know there’s no long term future in the relationship?