Actually Samsung success with those processors is directly related to technology Apple owns through the purchase of Intrinsity a couple of years ago. Apple and Samsung worked hand in hand to develop those technologies into the ARM processors Samsung now manufacturs.
As to the Samsung plant in Texas it is rumored that the plant was partially funded by a partnership and that it is possible that Apple was the partner or one of them. This is more rumor compare to the fact that Samsung used Intrinsity developed tech in their ARM processors.
There is no question about Samsung's technical and supply chain capability. However, Samsung can be likened to a former buddy who:
1. sleeps with your wife in front of you
2. denies doing anything wrong
3. accuses you of sleeping with his wife and therefore rationalizes it's a fair trade
But yes, as we all already know, business is business.
Off tangent I know, but this company's less than ethical practices simply disgust me.