I wonder: The arms race between bacteria and other organisms has gone on for a long long time, is there a defense mechanism against every bacteria? Because othe

I wonder: The arms race between bacteria and other organisms has gone on for a long long time, is there a defense mechanism against every bacteria? Because otherwise bacteria would be the only organism to inhabit this planet? Or is the only thing that historically prevented world domination by bacteria the lack of transportation to remote places? If that's the case then has the proliferation of mass transport ultimately shifted the odds in favor of bacteria? And are antibiotics a catalyst for the evolution of bacteria or its demise?