Too much to unpack here. Just like LTE before it, and 3G before that, being the first to market is not always the best. Apple had a set of criteria for OLED that was not met until now. When you’re goal is to build the *best* devices you can for consumers, you don’t always accept the earlier versions with more trade-offs.
Conversely, leaving behind the aging and under-developed micro-USB standard, or avoiding the complexity that multiple file volumes in a device, brings huge gains to Apple’s devices that Samsung doesn’t have.