Getty / Scott Olson A billionaire investor dubbed "the next Warren Buffett" slammed WeWork in a private annual letter to clients. Baupost Group CEO Seth Klarman blasted cofounder and ex-CEO Adam Neumann's $1.7 billion golden parachute as the "epitome of capitalist excess." "WeWork was a prosaic operating business which was branded as a VC-backed, technology-empowered, futuristic innovator with boundless possibilities," Klarman said. The coworking startup was ultimately sunk by the "hard truths of business fundamentals," he said. Visit Business Insider's homepage for more stories. A billionaire investor dubbed "the next Warren Buffett" tore into WeWork in his private annual letter to clients. The coworking startup, which spectacularly imploded last year, is "a reminder of how quickly the lessons of prior financial bubbles can be forgotten," Baupost Group CEO Seth Klarman said in the letter, which was viewed by Business Insider.See the rest of the story at Business InsiderNOW WATCH: A big-money investor in juggernauts like Facebook and Netflix breaks down the '3rd wave' firms that are leading the next round of tech disruptionSee Also:The deadly virus sweeping across China could slash its economic growth, S&P warnsJim Osman is an expert at picking stocks set to surge for abnormal reasons.