They could buy global foundaries and pour in a pile of cash, 5 years later they’d have something useful
Or they could buy out Intel and sell off their cpu design division
In that case they would have just burnt cash for 5 years and didn't have anything to show for it.
If it was that simple, they would have done it.
In that case they would have just burnt cash for 5 years and didn't have anything to show for it.