I had no idea that so many of these beautiful machines still existed
Still not enough in my opinion, not that I am biased or anything. I agree that it would be great to see more in flight. However, I suspect that maintenance costs would prohibit that. A Flying Boat has all the technical problems of a land based aircraft plus the problems associated with landing on water, especially salt water. We only have to look at the problems facing the Vulcan to see how difficult it is to raise money for preserved aircraft.