sigh I just knew when I wrote that that people would come back with examples that kinda-sorta have influence from other platforms. But I'm not talking about creating an app which uses cards; I'm talking about rethinking the fundamental way a UI component works. When Apple decided to rethink the way their notifications work they didn't look at the total landscape of ideas from around the industry or come up with their own; they just did it the same way their major competitor did it. When Android decided to rethink the way they handled multitasking they didn't look at the competitors and do something new; they threw lipstick on what they already had.
I'm talking about big concepts here.