I believe you can now stream from streaming services if the aircraft has been updated with the satellite wifi. AA's website alludes to it, although it still might lag.
Upgraded, high-speed Wi-Fi is available to buy on select domestic flights. Browse the internet, check emails and stream video services like Netflix, Hulu and HBO faster than ever before.
https://www.aa.com/i18n/travel-info/...URL&title=wifi