Apollo was a political endeavor. It was rivalry with the Soviet Union. The spending on it in modern dollars is as a percentage of GDP or the Federal budget just

Apollo was a political endeavor. It was rivalry with the Soviet Union. The spending on it in modern dollars is as a percentage of GDP or the Federal budget just wouldn’t happen now. Science obviously has value but this was a huge price to pay. What changed since was a poor successor (the Space Shuttle) followed by the shift from political to economic motivations in space. As for Concorde, that was a product of the belief in supersonic transport bring the future that was just plain wrong. Where you can use it is too limited and subsonic jets became way more efficient and reliable than anyone predicted. You may say that not much has changed but air travel 50 years ago was massively expensive. Now air travel is ridiculously cheap. That might not be as flashy but it has massively changed how people live.