The wealth divide is exacerbated by two different types of inflation. While wages are benchmarked against CPI (consumer goods), wealth for asset-holders grows with "asset price inflation" (stocks, real estate), which compounds much faster. Young people paid in cash cannot keep up.

Spirit's troubles highlight a broader market trend where budget-conscious consumers cut back while the wealthy splurge on luxury. This pattern, once confined to goods, is now evident in services like travel, signaling a potential risk for other budget-focused businesses and an opportunity for luxury brands.

The US innovation ecosystem is fueled by a culture of risk-taking, which is incentivized by a regressive tax system at the highest levels. The tax rate plummets for the wealthiest 1%, creating an enormous potential upside that encourages venture creation, despite the lack of a social safety net.

Extreme wealth creates a dangerous societal rift not just through inequality, but by allowing the ultra-rich to opt out of public systems. They have their own concierge healthcare, private transportation, and elite schools, making them immune to and ignorant of the struggles faced by the other 99.9%, which fuels populist anger.

Many individuals can articulate a detailed investment strategy but have never considered their own philosophy for spending. This oversight ignores a critical half of the wealth equation, which is governed by complex emotions like envy, fear, and contentment. A spending philosophy is as crucial as an investing one.

Today's market is more fragile than during the dot-com bubble because value is even more concentrated in a few tech giants. Ten companies now represent 40% of the S&P 500. This hyper-concentration means the failure of a single company or trend (like AI) doesn't just impact a sector; it threatens the entire global economy, removing all robustness from the system.

Despite the best earnings season in four years for companies like Apple and Amazon, consumer brands like Chipotle, Shake Shack, and Crocs report slowing sales from 20-somethings. This demographic faces soaring unemployment and slowing wage growth, creating a hidden weak spot in an otherwise strong economy.

Extreme wealth inequality creates a fundamental risk beyond social unrest. When the most powerful citizens extricate themselves from public systems—schools, security, healthcare, transport—they lose empathy and any incentive to invest in the nation's core infrastructure. This decay of shared experience and investment leads to societal fragility.

The global economy's reliance on a few dominant tech companies creates systemic risk. Unlike a robust, diversified economy, a downturn in a single key player like NVIDIA could trigger a disproportionately severe global recession, described as 'stage four walking pneumonia.' This concentration makes the entire system fragile.