With women being the gatekeepers of relationships, can we safely say that modern technology has created an imbalance with modern dating (way more guys and easier access to them) which in turn has led to lack of commitment and overall unhappiness in the dating world?

I agree that men are also responsible for this but I would still say that women are more to blame since I see a lot of them unwilling to commit due to the massive amount of choices being offered. (The paradox of choice)