Your "different view of how Buffet became so weathly" is not different at all. I said, "According to the article, his companies don't do as well as his stocks, but they do provide cheap cash to be used for his leveraging." All you did was explain how he got that cheap money out of the companies.
But you are right, if you look at the last 10 years, BRK has only gained 175% whereas the S&P gained 227%. Couple that with the fact the BRK is leveraged 160%, it says to me he is a loosy invertor.
But he is not such a looosy invertor, because he came up with a plan and stuck with it for 57 years. I will never be able to boost of something like that, but my plan has done quite well.
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