You have to remember that in 1950, the US had a tremendous influence in Japan, to put it mildly, and also in 1950, the US was rabidly, performatively anti-communist. When McCarthyism was getting started stateside, we were also carrying out a "Red Purge" in Japan.

Anyway, yeah, in this context, Japan passed the Agricultural Land Act of 1952, which was intended to turn land owned by a few rich landlords into small, independently owned private farms. That may sound like the opposite of capitalism, and it is, but as I understand it, the idea was to turn what were basically serfs into a proper middle class, by redistributing the wealth and means of production directly down to them, which would then prevent communism from being as appealing. I don't know about the logic, but I guess it worked, since Japan isn't communist?