There have been a few folks who purchased a large amount of Takefu steel ( pretty much identical to Hitachi). It was Blue#2 equivalent, and other laminated types, IIRC. The white and its equivalent is apparently considered a state secret in Japan and they won't ship it out.
Quite a few years ago, a group of us attempted to but one metric ton .. yes 2200 pounds ... of White #1 directly from Hitachi. They said they would be glad to sell their steel to us in the USA, but we had to meet their minimums. First it was 500 pounds, then, 1000, then 2200. They played around with the "Oh, you need to buy this amount", and "Oh you need to have it shipped to a bonded warehouse", etc. We met each demand, and when they were out of excuses, they just said , NO. I believe Aldo had the same response.