These people who are so upset about the sale can absolutely do something to prevent it: outbid Limbaugh.
Conversely, they could really hurt Limbaugh by refusing to attend or watch any of the games his team plays. Let Rush dump gazillions of dollars in a team, when the fan base evaporates - the team is worthless. Liberals know this, if they really feel that bad about Limbaugh, then allow him the same rights as anyone else with the money to buy a team; and then simply let the team go bankrupt.