I’m quite sure that these shortages aren’t caused by mania, but oligopolies, and unpredictable countries. In undistorted markets, these should be way shorter. A year, or two maximum. At least that what supply side told us in 2020, and early 2021. It seems and predictions also say, that the shortages are with us long term. It’s even more telling that some companies leave markets where these “shortages” are, ie huge profit margins.