I doubt he was walking through the factory floors of every company he considered. That kind of approach can’t scale. I think he might have done something like that but without being physically there for companies that he narrowed down to 1 or 2. Specially before he was warren buffet. Company’s don’t allow (give time of the day) to rando’s who are investors and want to evaluate them
Actually, yeah, he probably does. His approach doesn't scale -- not at all. He bets big on individual companies. As much as Berkshire Hathaway has scaled, it's by having employees who are similarly _involved_ in the process. They aren't armchair investors -- not now and not in the past.
And no, companies don't give tours to randos. You have to do it with a lot of money on the table. Buffet isn't rags to riches; he's medium-rich to super-rich, and he got his start in much smaller businesses.
