Nobody is losing money. The Marlins fielded a team of entirely players making league minimum salary and have virtually no fans or interest in what should be one of the biggest baseball markets in the US. The A's and Rays are playing in minor league stadiums. The Pirates haven't cared about winning for decades. All of these teams are doing fine financially.
The revenue sharing that we have now only perpetuates this problem, since all you have to do to make a profit is keep your payroll down and MLB will write you a check for $50 million every year.
The Brewers are beneficiaries of this system, along with every other team that has ownership and management that is competent and cares about winning. We do not need changes that reward poverty. We need changes that reward smart decision making and winning. We need to ban the financial manipulation that the Dodgers engage in.