Enterprise AI ROI: When will the spending pay off?

I've been following the latest earnings from the big cloud providers and AI startups. The capex numbers are staggering, but I keep seeing enterprise adoption stories that sound more like pilot programs than full-scale rollouts. Everyone is buying GPUs and model access, but where are the actual bottom-line results? A few vendors are talking about productivity gains, yet most CFOs I know are still waiting for clear ROI metrics. With model prices dropping fast, it feels like the revenue side is getting squeezed while the infrastructure costs keep climbing. Are we just in the trough of the hype cycle, or is there a real risk