C3.ai stock looks like a great buy right now if software is the next frontier in the fast-moving artificial intelligence industry.Ark Investment Management operates a portfolio of exchange-traded funds (ETFs) focused on innovative technology stocks. Its founder and chief investment officer, Cathie Wood, thinks software companies could be the next big opportunity in the artificial intelligence (AI) industry. In fact, she predicts they will eventually generate $8 in revenue for every $1 spent on chips from su ...