Revenue growth alone hasn't been enough to convince investors that C3.ai is a good stock to buy, and that may not change anytime soon.C3.ai (AI 1.59%) is a software provider that offers turnkey artificial intelligence (AI) applications that can help businesses automate and improve their operations. It's a stock that should be thriving amid rising demand and interest in AI. And while its growth rate has been improving, the stock itself hasn't been a hot buy with investors this year, as share prices are down ...