Two Wall Street pundits believe Nvidia could be a $10 trillion company.Last week, Nvidia (NVDA -1.66%) reported solid financial results for the second quarter, but the stock has now tumbled 20% from its high. The drawdown was fueled by concerns about the sustainability of the artificial intelligence (AI) boom and the delayed launch of Blackwell, Nvidia's next generation of data center chips.That represents a dramatic change in market sentiment for the semiconductor company. Only three months ago, Nvidia ann ...