If both robotics and human spaceflight will become cheap enough, even the fact that, say, robotic flights are fixed times cheaper won't matter. You don't always

If both robotics and human spaceflight will become cheap enough, even the fact that, say, robotic flights are fixed times cheaper won't matter. You don't always refuse to get a cup of coffee just because it's several times more expensive than some alternatives. The absolute difference is small enough for you to just ignore the fixed relative difference.