As usual a corrupt Federal bureaucracy captured by the oil and gas industry applies laws which allows the them to make up new rules and conditions as they go along.
In any other industry experience gained from earlier builds would go into improving future builds
Korea averages less than 5 years and the Japanese have managed one in less than four.
https://www.koreatimes.co.kr/www/news/biz/2016/10/123_215869...
As usual a corrupt Federal bureaucracy captured by the oil and gas industry applies laws which allows the them to make up new rules and conditions as they go along.
In any other industry experience gained from earlier builds would go into improving future builds