The problem with that is that it would greatly increase the demand for the retina models. That's all well and good as long as they can get enough good quality screens to meet that demand, but that may not be the case yet.
We only heard of screen yeld issues from 1 source, unless apple is changing the supplier I hardly believe thats possible
That's not much of an insight. Of course people are going to buy the Apple upgrades - since the rmbp's are touted as non-user upgradable. The RAM is actually soldered to the board.
there are several ways to rebut this, but yes people are aware that everything is soldered, thus they buy upgrades. Upgrades have a higher margin of profits.
in the end is how the user still fills that having large amounts of ram is the main bottleneck not the HDD
this is different for several professionals, for office workers, 8gb is more than enough, for graphics professional this 16gb may not be enough, for IT professionals it will depend on what s/he does
storage is inexorably moving to the cloud, this is going to be slow and so forth, in the meantime we have lowering prices of SSDs, the m500 960gb for 600? that was 1 unheard of when they launched just a few years ago, from 2009 to know they have actually become more and more affordable
in the end, your possibility of getting more or changing the storage is not something I really care about, if thats the only argument here, I dont see how ultrabooks have been a large success as they have been.