Saudi and Women

Apparently Saudi's government is considering banning women from Mecca, claiming that the city is overly crowded. Now, I know that women in Saudi lead strict lives. They are not allowed to drive, need permission from their male guardian to go to school, to have a job, to travel and to stay in a hotel. The fact that they considering banning women as a solution of overcrowding mosque is beyond my comprehension, why don't they restrict both men and women by limiting the amount of visa they issued?