DeSantis and Abbott call the Southeast a $9T boom belt. The data backs them. The critics say it's already breaking.

DeSantis and Abbott held an April 7-8 Miami event promoting the "Boom Belt" — 11 Southeastern states generating $9 trillion in combined GDP (second only to China globally). SEC Chair Paul Atkins pitched the Texas Stock Exchange as an NYSE/NASDAQ alternative. Boom belt states absorbed 70% of US population growth in the last five years.

1. This Is What Good Policy Looks Like (DeSantis, Abbott, Citadel, JPMorgan)

Low taxes, light regulation, and business-friendly courts built this. Companies and people are voting with their feet. The data is not ambiguous.

Policy backs the pitch: low taxes, light regulation, business-friendly courts. Texas made income, wealth, and death taxes unconstitutional. Florida, Tennessee, and Texas have no income tax. The South grew 0.9% last year, four times the Northeast's 0.2%. The top ten fastest-growing metros are all in the Sun Belt.

Corporate exodus is real. Citadel Securities President Jim Esposito cited business confidence in high-growth states. ExxonMobil, Tesla, and Chevron moved to Texas. Texas is now the world's eighth-largest economy. JPMorgan CEO Jamie Dimon acknowledged the flow from higher-tax blue states.

Individual migration is accelerating. South Carolina grew 6% in Jasper County alone. Florida hit a state tourism record of 143 million in 2025. Remote work unlocked permanent relocation of high earners.

2. Growth Isn't Reaching the People Who Live Here (Florida Democrats, Housing Experts)

The headline numbers look great. The lived experience is a squeeze. Boom belt residents are paying more for housing, insurance, and healthcare than they ever have, and the legislatures that could help them are not helping.

The Florida legislature stalled on what residents need. Property tax cuts, insurance reform, healthcare relief, and housing affordability all failed to pass. Meanwhile, residents face skyrocketing housing, insurance, and healthcare costs — macro GDP gains mean little at the kitchen table.

Sun Belt affordability just broke a 70-year pattern. Before 2000, Sun Belt cities built housing fast and kept prices low. Then construction fell and prices surged. Miami and Phoenix, once affordable, now match coastal markets. Housing economists say this is "the first time in American history where we don't have affordable housing markets with high job growth."

Migration may already be peaking. United Van Lines reclassified Texas and Florida from "net inbound" to "balanced" — meaning inflows now roughly equal outflows, a first for both states.

3. And There's a Serious Climate Change Problem (Water and Climate Experts)

Data centers need water. The aquifers are shrinking. The coasts are sinking. The infrastructure is aging. None of these problems is hypothetical, and the boom belt has not yet started to reckon with them.

Data centers need water. Aquifers are shrinking. Corpus Christi faces a deepening water crisis as AI infrastructure expands. Half the lower 48 are in drought. Arizona's Colorado River allocation was cut 18% since the 2022 shortage began. A water main breaks every two minutes nationally; six billion gallons of treated water are lost daily. Dry-cooling for data centers exists but is slow to adopt.

The Gulf Coast is rising twice as fast as the global average. Since 2010, the southern US has experienced double the global sea level rise rate. Florida has 2.4 million people and 1.3 million homes within four feet of high tide. Texas's Gulf Coast faces 10-12 inches of rise by 2050.

Coastal losses are staggering. $48.2 billion to $68.7 billion in Southeastern coastal property will be below sea level by 2050. Louisiana alone faces $33-45 billion in losses. The boom narrative assumes permanent growth; the climate math suggests otherwise.

Where This Lands

The growth is real — migration, GDP, and corporate relocations are fact. The question is whether it holds. DeSantis and Abbott are right that their policies attracted capital and people. Wall Street is following. But housing economists are right that affordability broke in a historically unprecedented way, and climate scientists are right that Gulf Coast geography is making long-term bets riskier every year. Where this lands depends on whether boom belt states can fix affordability and adapt infrastructure before saturation, water stress, and sea level rise undermine the boom.

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