You dont seem to know how much pull Samsung has in the components arena do you?
They are
#1 in RAM Memory
#2 in semiconductor LSI
#1 in flat panel display
#1 in rechargeable battery
#2 in mobile phones over all
#1 in NAND flash memory
$8 billion to a company with revenue generation in excess of $140 billion is chunp change. That is around 4% of total revenue.
Never sue your supplier when your supplier can turn around and gobble up other suppliers and increase the price for all OEM makers, but giving itself the cost effective goods, because it also itself is an OEM maker.
Unlike Apple, who is just a customer, Samsung is BOTH a customer AND a supplier at the same time. Either way, they win.
Quite recently, Samsung attempted to take over Sandisk, the NAND flash memory company. It wasnt successful due to some differences in price offers. That alone tells you that Samsung is willing to strangle hold the market even more than it already has. NAND flash market alone, Samsung has over 30 % of the market all to itself. For RAM memory, it close to 40%.
Apple is barking up the wrong tree.
As I said earlier, Samsung are contracted to supply parts, so Apple can do anything they want.
And if Samsung stop providing parts, then they simply open the way for other fabs to take up the slack. And don't bet your bottom dollar that there are companies out there who want Apple's $$.
If Samsung allows it's competition to gear up (eg build a few extra fabs), then the value of their parts will go down as the market gets opened up.
Samsung need Apple more than Apple need Samsung.
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Ok, for the dim, here is the problem -
Making parts is one thing, we can all make parts, we can all go into our garage and make a random widget. We can make hundreds of those widgets.
But - here is the kicker -
We need someone to buy those widgets.
If no one buys the widgets, we can't make the widgets, and in this scenario Apple sell the widget to the end user. The game is with Apple, not the parts supplier.