Palm oil is a tiny fraction of the ingredients that Starbucks uses. That makes the options for them really simple. They can choose to pay the premiums for untainted palm oil or they can drop its use totally
Unlike pandas which are darn hard to breed in captivity (congratulations to Zoo Atlanta for the twin pandas born there last month ) orangutans are fairly easy to breed in captivity. So, unlike the dinosaurs or the dodo bird, orangutans are not going to disappear off the face of the earth.