If FSD is the future (personally I think we're fifty years away but whatever) why the hell would you hand that future over on a golden platter to Tesla? Any serious car maker would rather develop their own software to remain relevant.
There are a lot of 2nd-tier car makers that realistically can't develop the talent or organizational structure to developer their own self driving tech. The Toyotas/Volkswagons/GMs of the world aren't going to license this (yet) but maybe the Subarus, Mazdas, Dacias, etc would if they thought it would it would be a differentiating factor.
Dacia is part of the Renault Group which itself is part of the Renault/Nissan alliance.
Toyota has a minority stake in Subaru. They share a lot of technology and even some complete vehicles.