Both have unique challenges, but overall brucethemoose is right about the overall cost comparison. For instance, we could easily have a “space elevator” equivalent to the bottom of the ocean, it’d be a fraction of the cost of maintaining a freight network to mars. Pressure is hard to deal with, but not as difficult as it is to get shit out of a gravity well as dense as Earth.
Both have unique challenges, but overall brucethemoose is right about the overall cost comparison. For instance, we could easily have a “space elevator” equivalent to the bottom of the ocean, it’d be a fraction of the cost of maintaining a freight network to mars. Pressure is hard to deal with, but not as difficult as it is to get shit out of a gravity well as dense as Earth.