Maybe you're not old enough to remember, but OLED was also touted as the future for many years before it actually became available - I remember hearing about OLED at the time when flat panel LCD monitors were starting to become widespread in the early to mid 2000s, but it still took some years for them to appear in phones and then, much later, in TVs. Actually the first device with an OLED display that I had was a cheapo Chinese USB-stick-with-integrated-MP3-player which I bought more out of curiosity for the OLED display and never actually used because I already had a phone that could play MP3s (this one: https://en.wikipedia.org/wiki/Sony_Ericsson_K800i).