Agreed. Southwest Airlines does this in the US, with "free" wifi access to their entertainment app/portal. I much prefer it to the often terrible seat-back screens on some other carriers.
I have even seen on some airlines (Alaska) that are doing away with seat backs screens on newer flights you can pay to rent a tablet if you don't already have one, want an extra one, etc.
Same with certain United flights. Stream movies onto your own phone from the plane's WiFi.