In a recent CNBC interview, Berkshire Hathaway CEO Warren Buffett describes the “extremely uneven” impact the pandemic has caused across the U.S., adding “It’s not over.”

“Many hundreds of thousands or millions of small businesses have been hurt in a terrible way, but most of the big companies have overwhelmingly done fine,” Buffett said. The article reports that GDP for the first quarter last year dropped 31.4%, “unprecedented in post-Great Depression America.”

According to Buffett, the pandemic “decimated all kinds of people and their hopes” while leading to windfalls for some larger businesses. Buffett’s partner Charlie Munger weighed in, “The auto dealers are coining money that they wouldn’t have except for the pandemic.”

Buffett said the biggest lesson he learned from the pandemic is how unprepared the world can be for emergency situations: “I learned that people don’t know as much as they think they know. But the biggest thing you learn is that the pandemic was bound to occur, and this isn’t the worst one that’s imaginable at all. Society has a terrible time preparing for things that are remote but are possible and will occur sooner or later.”