For there to be a business, there has to be owners. So, who would own the teams in this league? The union? The players? If it's the players, is it only the current players? When a player retires, would they cede ownership to the player taking his place, or would we just end up with a couple hundred former players sharing ownership down the road? Who would make all of the management decisions? For instance, who would tell the player/owner who isn't that good that he was getting cut so that a better player (who is not yet an owner) could take his place, and probably take over his share of the ownership? Are the units of ownership transferrable? If so, could owners sell their share? If that happens, it wouldn't be long before some of those evil billionaires buy out majority ownership in all the franchises. If the union takes ownership, then they cease to represent the players, and are now just replacing the current owners. Then there are contracts. I would guess that the current players' contracts disallow them from playing baseball for anyone other than the team with whom they signed the contract. So, the only players who could leave would be current free agents and others who don't have any sort of contracts. Of course there would be plenty of players who would just stick with the league that has proven to have the ability to pay multi-million dollar salaries rather than taking the risk of joining a start-up league. Plus, there would be a definite conflict of interest if the union had any ownership in the new league that was directly competing with the MLB, so they probably wouldn't be able to represent the MLB players any longer. With the MLBPA out of the way, teams would be able to negotiate directly with players and their agents, and I would guess that the top free agent players would be getting huge offers to stay in the MLB rather than testing the markets in the new league. If a new league were to start, it wouldn't be started by the players or the union. One of those groups is good at playing baseball, and one is good at labor law. Neither would have a clue as to what it would take to run a billion dollar business. The league would be started by some other business people, just like the current owners. This dream of the players starting their own league really isn't based in reality, and even if it somehow came into being and succeeded, it wouldn't take long before the same old owner/labor battles were brewing. That's some things I came up with in a few minutes. I'm sure the high-priced attorneys would find a lot more problems with some players deciding to form their own league. It may be fun to pontificate, but it's not going to happen. What about the fans? Soccer does it , why can't baseball?