While a strong business model is necessary, it doesn't generate outsized returns. The key to successful growth investing is identifying a Total Addressable Market (TAM) that consensus views as small but which you believe will be massive. This contrarian take on market size is where the real alpha is found.

Thrive's data shows the number of companies reaching $100B+ valuation grew faster last decade than those reaching $10B. This suggests it's a higher-probability bet to identify future mega-winners from an established pool of large companies than to pick breakout unicorns from a much larger, riskier field of thousands.

During a fundamental technology shift like the current AI wave, traditional market size analysis is pointless because new markets and behaviors are being created. Investors should de-emphasize TAM and instead bet on founders who have a clear, convicted vision for how the world will change.

Jim Cramer suggests evaluating stocks not just on current metrics, but on their "Total Opportunity Value"—the potential scale if their vision is fully realized. This framework, exemplified by Netflix's evolution from DVDs to a global media giant, prioritizes optimistic, long-term potential over short-term risk.

To vet ambitious ideas like self-sailing cargo ships, first ask if they are an inevitable part of the world in 100 years. This filters for true long-term value. If the answer is yes, the next strategic challenge is to compress that timeline and build it within a 10-year venture cycle.

Allocate more capital to businesses with a highly predictable future (a narrow "cone of uncertainty"), like Costco. Less predictable, high-upside bets should be smaller positions, as their future has a wider range of possible outcomes. Conviction and certainty should drive allocation size.

Instead of predicting specific companies, identify irreversible macro-trends, or "directional arrows of progress." Examples include the move towards higher energy density (carbohydrates to uranium) or more compact data storage (spinning drives to flash). Investing along these inevitable paths is a powerful strategy.

Companies like Amazon (from books to cloud) and Intuitive Surgical (from one specific surgery to many) became massive winners by creating new markets, not just conquering existing ones. Investors should prioritize businesses with the innovative capacity to expand their TAM, as initial market sizes are often misleadingly small.

After years of piling into a few dominant mega-cap tech stocks, large asset managers have reached a point of peak centralization. To generate future growth, they will be forced to allocate capital to different, smaller pockets of the market, potentially signaling a broad market rotation.