I think there may be a a program for building flattops until 2050, but such a program will certainly not be set in stone.
As for a financial default the Amsterdam Bank that was founded in the early 17th century and was the centre of Amsterdam's role as the main financial hub of the World had more obligations than assets scores of years before it defaulted and let London become the financial centre of the World at the end of the 18th century.
As for a financial default the Amsterdam Bank that was founded in the early 17th century and was the centre of Amsterdam's role as the main financial hub of the World had more obligations than assets scores of years before it defaulted and let London become the financial centre of the World at the end of the 18th century.