The economics problem still exists today in the bay area though....two teams within a twenty-mile radius marginally works.
In this case...respect for de Blasio is a joke, and baseball leadership knows that.
2 NFL teams obviously didn’t work or Vegas just offered too much to the Raiders to refuse. At the time the A’s had just won 3 World Series in a row and the Giants in comparison had 3 seasons of MLB’s lowest attendance. Today is obviously different. That said our musings here on FR about team spectator sports are a fading thing.