The NFL Season Ticket package has been decoupled from DirecTV for a couple of years now - you can watch your non-local games on pretty much any streaming device.
Why can't there be one service that I can just pay for and turn on at any time after it airs, like HBO Now?
If you can prove you can't get DirecTV at your residence. Otherwise you have to get NFL Game Pass and watch the game replay later (usually the next day), not live.