In the latest – and hopefully last – development in one of the US media industry’s most tragic consumer marketing car crashes, AT&T TV has become DirecTV Stream. It is the first shake-up of DirecTV video services since starting a new chapter as a standalone company – but does DirecTV Stream have any hope of longevity? If the new venture has any sense whatsoever, the DirecTV Stream branding should stick around for a very long time indeed, in a long-term strategic commitment that has come years too late. Traversing the cord cutting minefield is hard enough anyway for a company like DirecTV, with product teams working overtime to embrace IP video technologies across the board to guide DirecTV into a…