Buffett has blasted arrogance, bureaucracy, and complacency as "corporate cancers" that can destroy large organizations. : Warren Buffett told the CEO of the Bill & Melinda Gates Foundation that the greatest threats to the philanthropic behemoth were cockiness, red tape, and self-satisfaction. The billionaire investor and Berkshire Hathaway CEO, who has gifted a total of $33 billion to the foundation and resigned as its trustee in June, has warned about those forces in the past.