Jumbo jets aren't nearly as expensive as people think, these are often rented and those which are not can be resold.
Jumbo jets would not require anywhere near the amount of investment the concorde would even if you didn't had to recertify it from scratch.
For the most part the "uber rich" would use a private jet as long as they can make money of it as in being able to get where they need to be at the shortest of notices which the concord won't allow them.
You can land a gulfstream anywhere same goes for something like a 737, a 747 is a bit more restrictive but it still can land in virtually every metropolitan airport in the world.
Heck the fuel costs alone would be over the top even for the uber rich were talking about $50-60,000 an hour at it's cruising speed of 1260 knots.
Jumbo jets would not require anywhere near the amount of investment the concorde would even if you didn't had to recertify it from scratch.
For the most part the "uber rich" would use a private jet as long as they can make money of it as in being able to get where they need to be at the shortest of notices which the concord won't allow them.
You can land a gulfstream anywhere same goes for something like a 737, a 747 is a bit more restrictive but it still can land in virtually every metropolitan airport in the world.
Heck the fuel costs alone would be over the top even for the uber rich were talking about $50-60,000 an hour at it's cruising speed of 1260 knots.