Watching Alphabet's latest earnings and honestly, the growth story here is getting harder to ignore. Q4 revenue hit $113.8 billion, up 18% year-over-year. That's solid top-line momentum for a company already this massive.

But here's what caught my attention: Google Cloud is absolutely firing. Revenue jumped 48% to $17.7 billion in the quarter, and operating income more than doubled to $5.3 billion. That's the kind of margin expansion you rarely see at scale. Meanwhile, search is still doing heavy lifting - 17% growth in that segment alone. YouTube ads ticked up 9%. So it's not just one thing carrying the stock.

The real story though? Management just guided for $175-185 billion in capex for 2026. That's nearly double what they spent in 2025. Yeah, you read that right. They're going all-in on AI infrastructure.

CEO Sundar Pichai basically said the AI investments are already driving revenue across the board. So management isn't just throwing money at a problem - they see real returns coming through. But it's a bet. A massive, capital-intensive bet.

If you zoom out five years and assume Alphabet executes on this, the math gets interesting. Cloud profitability expanding like this, search still dominant, AI monetization ramping - if they pull it off, earnings could genuinely double. At a reasonable 28x multiple (where the market has historically valued them), you're looking at stock price potentially doubling too. From around $300 today to $600.

Obviously that's not guaranteed. Competition could intensify, or these massive capex numbers might not deliver the returns management expects. That's real risk.

But the momentum in cloud, combined with Alphabet's search moat? I think there's something here worth watching. Just wouldn't go overweight given the capital intensity. Keep it measured for now.