This ^^^^
If your company came to you and said, "we want to change how we pay you. We want you to work more and make less." What would you do? In your situation you would probably take your skills elsewere (any self-respecting worker would) but where are the NFL players going to get another job playing football? Is Tom Brady going to say, "screw you! I'm going to play for $800/month in the Arena league!" ???? These guys are profesionals, and there is only one professional league out there. It's the NFL or bust, that's why they are fighting the owners.
Where are the NFL players going to get another job playing football? Seriously? Who says they NEED to get another job in football? Tom Brady can go back to school and learn a skill that will earn him a living outside of the entertainment business if he wants... heck, he probably already has a degree in something. It's NOT NFL or bust... it's the NFL or do something the players would really rather not do... play in a lesser league or get a real job. For the life of me I can't figure out why people think that playing football at a high level "entitles" anybody to anything. The players are the draw (along with the team in general), but that in NO WAY entitles them to anything more than what the owners are willing to pay them.
As far as my company coming to me and dictating a pay cut... companies all over America lay off workers due to "cost cutting", "an economic downturn", etc. I don't recall any private entity having to supply the books to the workers they lay off to "prove" they needed to downsize.