I'm told OJ was innocent too, or that there was no evidence to the contrary
If you are looking for iron-clad evidence
and you are an industry outsider who has never been a customer, or a supplier, of a Samsung fab in China or Korea then you are never going to be presented with that evidence in a way that would compel you to believe what you are seeing.
I'm not looking for iron-clad evidence, I'm looking for
any evidence. I'm not aware that Samsung even has logic fabs in China, just some NAND one they started building last year. And I don't see why South Korea is less reputable than Taiwan. What Samsung Mobile does has almost nothing to do with what the foundry does. Samsung's SoCs are made with the usual licensed and in-house IP like everyone else's. I'm not aware of a single thing you can say that Apple's current SoCs that'd point to Samsung stealing anything. And if this were the case why would Apple have not included it in their lawsuit?
Speaking of TI and other fabs, they were pretty vocal about their disappointment with TSMC and desire to shift OMAP5 to other fabs, back when OMAP5 still had a shot at being relevant. So they may not be running to Samsung but they look like they're running from TSMC, to UMC of all places - as if UMC is even remotely competitive.
Did you think it was just a coincidence that basically every big-name fabless company of consequence has migrated to TSMC?
Who migrated to TSMC? All of the big players currently using it have been using it for years. Apple is the only one that transitioned from Samsung. Some like TI have transitioned from their own fabs to TSMC, but you already know that has nothing to do with Samsung and everything to do with the impracticality of making new process nodes internally.
You think they do that for TSMC's stellar wafer pricing or exquisite ability to deliver on their promised timelines? (that is supposed to be a joke

)
No, I think they do it because TSMC, being a pure-play foundry instead of IDM, was always better set up to provide a service to third parties.
That and the fact that they're well ahead of Samsung, and given that Samsung's foundry growth was almost entirely driven by Apple they probably always had little more than enough fab capacity for Apple. Of course with Apple leaving that capacity will open up but that hasn't really happened yet, so we don't know what Samsung will do with it.
Ajay said:
Good point. Why isn't QCOM running with open arms towards Samsung? Last I read, wafer starts at Samsung's state of the art Austin Fab are something like 40% below expected. One would think QCOM could get a good deal.
I haven't heard anything real about prices. But I can think of a few reasons why Qualcomm would not want to leave TSMC. Aside from TSMC being ahead of Samsung (they released 28nm products before Samsung released 32nm products...) it's also an actual design effort to change fabs and not especially desirable.