Causation of LOCKOUTS

     There is currently a lockout in the NHL due to a disagreement between the league and the players.  I already know that NHL players receive the least money on average out of any other men's professional sports.  I'm curious about what else plays into the lockout, which is consequently upsetting many NHL fans because of season ticket holders and whatnot.

     One reason for the lockout is believed to be precedent.  In 2004 and 2005, there was a disagreement about the revenue the league was receiving and how the money was being split between team owners, coaches, and players.  As a result, the players were "locked out" for the entire season.  Eventually, the players had a decrease of about 24% of their salaries.  This cutback in salaries recently ended and the league is at it again.  This worked for the owners 8 years ago, so the NHL is using this strategy again.  Once again, the owners have offered the players another 24% rollback in their salaries.  The revenue made by the NHL has increased from $2.1 billion to $3.3 billion, and the players aren't accepting another reduction of their pay.

     These labor turmoils have happened somewhat recently in other leagues as well.  Back in '94, there ended up being a cancellation in the MLB world series due to a 7-1/2 month strike from the players.  The NBA has also had in total 4 lockouts; the NFL 4 strikes and 1 lockout in the past.