The statement is directly and explicitly supported by two credible sources (Sources 1 and 15). Both are from Bloomberg, a reputable financial news organization, and state that 'Retail investors have lost an estimated $17 billion in an attempt to gain Bitcoin exposure through digital asset treasury firms.' While other sources confirm the broader context of significant retail investor losses in the crypto sector, the Bloomberg evidence specifically corroborates the $17 billion figure and the link to 'digital asset treasury firms.'