one thing that has never happened in used-to-be communist country i have experience with is starvation.

Perhaps I don’t understand your comment, but

• https://en.wikipedia.org/wiki/Holodomor
• https://en.wikipedia.org/wiki/Great_Chinese_Famine
• https://en.wikipedia.org/wiki/Russian_famine_of_1921–1922
• https://en.wikipedia.org/wiki/Soviet_famine_of_1930–1933
• https://en.wikipedia.org/wiki/Soviet_famine_of_1946–1947
• https://en.wikipedia.org/wiki/North_Korean_famine

Communism is clearly not immune to starvation, more like vice versa. Capitalism is neither, but it seems like the general improved wealth tends to fix this problem better than any centralized planning solutions can.