tldr; massive housing shortage The "Lock-In" Effect: With a large percentage of current homeowners holding historically low mortgage rates (below 4-6%), there is little incentive to sell, which severely limits the inventory of existing homes. The Affordability Gap: The lack of supply has disproportionately impacted affordable housing. The Harvard Joint Center for Housing Studies notes that nearly half of all renters are cost-burdened, meaning they spend more than 30% of their income on housing. Legislative Action: To spur new construction, federal and state governments are actively intervening. The bipartisan 21st Century ROAD to Housing Act offers federal funding to cities that meet specific housing-production targets. Meanwhile, states like California and New York are streamlining the approval of infill housing and Accessory Dwelling Units (ADUs) to circumvent local zoning roadblocks. Market Shift: Because buying a typical home costs roughly 40% more than renting, household formation has slowed to its lowest levels since 2017, leading many Americans to pivot to the rental market. if rates come down, mortgage rates come down, housing activity picks up, homebuilders go boomboom. The affordability gap is an artefact of supply, not demand. Ergo we're not back at 08. Pick HOV if you want XHB x5 leverage. Not my style though.