iPad motherboard cost isn't that much, rMBP is wayyyyyy more expensive.
But surely RAM fails and that is soldered in to those expensive motherboards?
Not to mention the failing GPU on some models.
the connectors on the Apple SSD may be proprietary, i don't know how OWC got their parts ... but it seems like its from the same supplier as apple.
for Micron to jump into manufacturing rMBP SSD, they have to consider whether people would want to upgrade their SSDs or not.
Crucial/Micro get a lot of Mac customers and they already make mSATA and NGFF format flash storage.
http://www.crucial.com/store/ProductMarketing_m500.aspx
Perhaps not unreasonable to imagine that Crucial M.2 (NGFF format) SSD, or a modified design, might have potential for use in the rMBP.
I'm not sure if the connector is the same as the one used by apple?
ADATA also have an NGFF SSD:
http://www.tweaktown.com/articles/5...ormance-preview-and-the-ngff-story/index.html
personally i'm not inclined to upgrade my SSD once i bought the rMBP even though i can, because the old SSD would have little to no resale value, and to make it as an external HDD is just ...... ridiculous
Perhaps if there were reasonable priced 480GB and 960GB (crucial) or 1TB options (upcoming samsung 840 evo), more people would.
However I don't see it happening for the 15" rMBP in this upcoming late 2013 release, as they would have done it for the MBA first. Perhaps the 13" rMBP could get the soldered RAM, but more likely the next MBA refresh which would be when late 2014/2015?