Mega-cap tech firms keep spending loads of cash on AI — and investors are starting to rebel. That was evident after Meta and Microsoft — two of the largest companies at the center of the AI revolution — saw their stock prices drop on Wednesday, after earnings. The catalyst for the losses was newly announced plans from both companies to spend even more on AI in the next year, despite colossal amounts that have already been poured into the AI race . Meta said it could spend $70 billion to $72