I see where the OP is coming from. Yes it is possible that you roll nothing but blanks. Also when that is the case there isn't much you can do.
However I think FFG has done an okay (not a perfect) job of mitigating the randomness. Probably one of the reason why the meta was so divisive was the fact that there was so many ways to just remove the randomness of the dice (Emperor Palpatine, Autothrusters, C-3PO). However I don't think luck decides on who will win and who will not in most of the games of X-wing. Certainly not as much as say Hearthstone.