These companies are offering two things greatly needed by AI customers right now.Jensen Huang, the chief executive officer of Nvidia, recently made a prediction. He said that he expects artificial intelligence (AI) infrastructure spending to soar to as much as $4 trillion by the end of the decade. As leader of the world's No. 1 chip designer and someone who maintains close communication with customers, Huang has a clear idea of what's to come in this high-growth market. So, when he speaks, investors sit up ...