It happened to me and many people in my poker circle. If you played well, had good bankroll management, game selected and studied hard it wasn't nearly as hard as you think.
Even if Berkshire didn't produce an underwriting profit, it'd still be very successful because of the returns they make on their float. There's a line obviously you can't cross but even if they had a combined ratio of like 1.05 they'd be fine. I like their discipline though.
Berkshire has always had a huge insurance component. They bought NICO in the late 60s and built the business to a large part around that.
That's not proof at all. 60 years ago markets were much less efficient than they are today, and Buffett Partnerships was incredibly small compared to the size Berkshire is now.
Buffett has said it ad nauseum- the anchor around his neck is the size. Beating the market with what $200 billion to invest? That's leagues different from beating it with $10 million.
not natty bro