While the preseason is good for players to get in the rhythm and play in a game, there isn't much in the way of financial reward.
Players are given room and board during training camp and make about $10,000 in each game they play in.
Yes. It's real money. But it's not the 1/16th game check they'll be receiving a few weeks later.
The NFL has said that they'll lose $200 million for each preseason game lost (or whatever they're saying), but that is much more of a motivator for the owners than it is for the players.
I don't believe for a minute that this - in and of it's self - is going to motivate them to get a deal done.