I guess the question is whether we're talking about B-H the textile company, or whether we're talking about Buffett's holdings in general.
Buffett didn't have anything to do with the textile company when it was Zynga's age (5 years); B-H merged in 1955 and Buffett didn't start buying until 1962. He's actually called buying it his biggest investment mistake, as he chose not to sell the textile company over a perceived slight, but probably could have made a lot more with the money if he'd invested it in better industries.
As for the holding company, Buffett started BPL in 1956, had several partnerships running by 1960, and merged them in 1962; at that point (a similar age to Zynga) the holdings were already quite diverse, just not under the B-H name. It wasn't until the late 1960s that he started using B-H as his general holding company.
So, if we're going to hold up Buffett as an "old-school CEO" who doesn't sell shares of his own company, let's remember that he's called not selling B-H (textiles) his biggest investment mistake, and let's remember that it's different to hold on to stock in a diversified holdings company (whether it was called BPL or B-H at the time) than it is to hold on to stock in a single-purpose company.
Buffett didn't have anything to do with the textile company when it was Zynga's age (5 years); B-H merged in 1955 and Buffett didn't start buying until 1962. He's actually called buying it his biggest investment mistake, as he chose not to sell the textile company over a perceived slight, but probably could have made a lot more with the money if he'd invested it in better industries.
As for the holding company, Buffett started BPL in 1956, had several partnerships running by 1960, and merged them in 1962; at that point (a similar age to Zynga) the holdings were already quite diverse, just not under the B-H name. It wasn't until the late 1960s that he started using B-H as his general holding company.
So, if we're going to hold up Buffett as an "old-school CEO" who doesn't sell shares of his own company, let's remember that he's called not selling B-H (textiles) his biggest investment mistake, and let's remember that it's different to hold on to stock in a diversified holdings company (whether it was called BPL or B-H at the time) than it is to hold on to stock in a single-purpose company.