Two Questions for Long-Term Investors

A shorter issue with two tests

Two questions deserve a place in a long-term investor’s notebook: how much future AI value is already in company prices, and when should US fiscal debt affect an investment view?

What would make the AI bull case durable?

Palantir, Amazon and Google have different business models, so a single “AI upside” label is too blunt. For each, compare incremental revenue and retention with the cost of product development and infrastructure. Ask whether AI expands margins or merely raises the cost of competing.

Alphabet's first-quarter 2026 disclosure is one concrete example of cloud demand, but strong cloud revenue alone does not establish the return on every AI investment. The assessment needs segment cash flows and a valuation that leaves room for execution risk.

When does US debt matter?

Debt matters to markets through financing needs, interest costs, inflation expectations and confidence in fiscal policy. A large headline debt total is not itself a timing signal for an equity sell-off.

In its February 2026 outlook, the Congressional Budget Office projected net interest outlays at 3.3% of GDP in 2026, rising to 4.6% by 2036 under its baseline. Those are projections, not a prediction of crisis. The practical watchlist is the path of interest costs relative to economic growth and federal revenue, alongside Treasury-market functioning.