I think they mean single player shooter is their favorite genre, and would be happy for EA to stay away from them. Not the ‘game nobody heard of’

Having other areas of your field with better pay/conditions/benefits can put more pressure on even non union places. Since there will be better contions elsewhere, there will be an expectation of a level of compensation/more people looking at those union places, requiring even the non union locations to at least increase something to compete for talent.