Warren Buffet was always a investor he didn’t himself pivot anything.
He didn’t found Berkshire he just bought a old public not very healthy textile company and used it as his investment vehicle /holding company and dumped its assets.
Yes all correct, just like the parent, but technically he did pivot the textile mill company into an investment company, even tho Warren Buffet himself didn't pivot (altho he's arguably pivoted a bit from his original investment strategy, but this a thread for large pivots).
Berkshire Hathaway the textile company died more than pivoted.
The kind of change that Berkshire Hathaway went through is fairly well used tool in finance. Every SPAC does the kind of the same for example, asset stripping and selling in parts or becoming a holding company is natural way for companies in late stage to die.[1]
Alphabet becoming a holding company is perhaps closer to a pivot for holding and operating companies than Berkshire
[1] A recent example would be Altaba that was created from the remnants of Yahoo.
He didn’t found Berkshire he just bought a old public not very healthy textile company and used it as his investment vehicle /holding company and dumped its assets.