In the thread about Catalonian referendum there is a post from gangleri2001 that matches pretty well my point of view, Basque elites do not want independence, they like to wave the basque flag, but they are absolutely confortable with the current basque tax status. They are not going to boost a true independence movement at this moment. IMHO they are not going to boost it while we have a different taxation and while the Basque Economic Agreement is in force. That's why just EH BILDU (Basque nationalist coalition of socialdemocrats and left wing) defends clearly the independence, because PNV (Basque nationalist conservatives) is absolutely confortable with a certain economic autonomy that allows them to control their affairs
On the other hand, supposing that they go for it, currently no more than a 55% wants independence and independence means getting out from the European Union this number is reduced to 45%.
As I have said in this thread I consider myself separatist, but honestly, I don't consider that independence is going to be achieved in sort or medium term.
Basque nationalists in france are a minority, If I don't see that independence is going to happen just with the spanish side, where we are a mayority, with the french side is almost imposible.
French Basques like considering themselves as French and basques, they will defend Basque culture but in political terms, most of them feel confortable in France.
Spain never have solved their national unity issue, when they have tryed to solve it they have done in a clumsy way or even by impositions that did not take effect
It may be part of the answer but not the complete answer. Franco's repression was just one stage more in the Spanish repression to cultural minorityes in Spain.