Some people seem to have forgotten the very obvious.
Apple has not been a display innovator for one very obvious reason--they don't make displays. Apple buys displays from Samsung.
So of course display innovation has always happened at Samsung first. Heck, "first" isn't even the right word for it, because Apple isn't making displays at all...so it's not like they are going to be second or third or anything.
What are these people expecting, that Samsung will favor their competitor's phone display advancement before their own? Or that all this time Apple has been an innovative display maker in secret, and any day now we'll see the result?
Apple has innovated in its displays, the OLED display on the iPhone X/Xs/Xs Max are apple displays, there even was a microscopic picture of the subpixel arrangement to prove it, its different.
You do understand that Samsung display is a fabricator. They create the display to apple specification, for apple. It’s not an off the shelf component.
You do know that Samsung doesn’t actually own any amOLED patents, they license it from a separate company, same as apple.
Btw Samsung display suffered a loss in revenue last quarter, they aren’t doing well at all.