Something clicked for me this week.

I've been watching prediction markets explode. Polymarket did $10B+ in volume in November. Robinhood calls it their "fastest growing business of all time." ICE just invested $2B at an $8B valuation.

Then I watched Vlad Tenev's interview with a16z, and it all made sense.

Vlad calls it a "supercycle." The more interesting question is why.

The Real Product

Here's what I think prediction markets are actually selling: agency.

Think about the pitch of traditional finance. Put money in your 401(k). Wait 40 years. Trust the system. The implicit promise is that patience pays off.

But what happens when that stops being true?

Housing prices doubled while wages grew 8%. Staying at one company for 20 years went from career strategy to career liability. The math stopped working, and everyone under 40 knows it.

When the system stops rewarding patience, people stop being patient.

The Vlad Insight

What struck me in the a16z interview is how clearly Vlad sees this. Robinhood didn't just stumble into prediction markets. They recognized that a generation of investors wants something different.

Traditional investing says: accept 10% annual returns and you'll be fine in 47 years.

Prediction markets say: your research matters right now. Your conviction can pay off today.

One offers distant security. The other offers immediate agency.

For someone who genuinely believes the traditional path might not exist by the time they reach the end of it, which sounds more rational?

The Numbers Tell a Story

Sports betting revenue: $248M in 2017. $13.7B in 2024.

Prediction market volume: essentially zero in 2020. $40B+ projected for 2025.

These aren't gambling addicts discovering a new vice. TransUnion profiled the typical prediction market user: urban, employed, educated, heavy users of investment apps. In other words, exactly the demographic that should be putting money in index funds.

They know the orthodox advice. They're choosing something else.

What I'm Watching

If this trend continues (and I think the structural conditions driving it aren't going anywhere), the investment case writes itself.

The platforms win regardless of whether individual bettors win. Polymarket, Kalshi, Robinhood's prediction markets, DraftKings, Coinbase: they all extract fees from volume. And volume is going vertical.

I'm not making a moral argument here. You can think prediction markets are good, bad, or neutral. But ignoring that tens of billions of dollars are flowing into them because it feels like gambling misses the point.

People don't gamble because they're bad at math. They gamble because the expected value of the alternative looks worse.

The Uncomfortable Question

There's a piece by @systematicls that frames this as "the prison of financial mediocrity." The traditional paths to wealth aren't just hard; for many people, they feel closed.

That framing might be overstated. But the underlying behavior is real. Money is flowing from patient, long-term investment vehicles into high-variance, short-term ones.

You can moralize about that. Or you can ask what it means for capital allocation over the next decade.

I know which question I find more interesting.

Inspired by @systematicls. The full thread is worth reading.