I'm not sure where we are commercially with Women's RL. Obviously it's something to be encouraged and some clubs are paying their players, though, no doubt at a lower level than the men's team. Playing simple, single price double headers isn't going to drag in revenue and playing a double header with two tickets required looks like it's a loser too.
Maybe the best plan would be to play home women's games on weekends when the men's team are away, maybe not on the same day. That would keep the revenue coming in.
Having said that, it seems to me that, currently, the women's game is very much like the men's game. A few good teams at the top, a lot of poor one underneath - only far more polarised. I don't know how much demand there is from spectators for the women's game or what the costs of staging the games might be. I wouldn't deny that it has a future or claim that it's a waste of time but we're certainly a long way from where we want to be.