Veteran technology executives express cautious views on the accelerating AI investment boom, comparing it to previous market bubbles like the dot-com era. Some, including former Cisco CEO John Chambers and Goldman Sachs CEO David Solomon, acknowledge rapid innovation and opportunity but warn of a speculative bubble with overcapitalized projects. OpenAI CEO Sam Altman concedes occasional poor capital allocation but remains confident in AI's long-term economic and scientific impacts. Analysts highlight current market valuations remain below historic bubbles, yet prudence is urged amid exuberance.