Tech giants lead a big earnings week as markets grow cautious MarketWatchWhat could kill the $1trn artificial-intelligence boom? The EconomistBig Tech says AI is booming. Wall Street is starting to see a bubble. The Washington PostSilicon Valley’s artificial intelligence frenzy: a bubble full of problems, bound to burst? The Mercury NewsTech’s splurge on AI chips has companies in ‘arms race’ that’s forcing more spending CNBC