Establish a $50B Universal Broadband Infrastructure Fund (UBIF) — a global public fund capitalized by development banks and donor governments — that co-invests with private operators in last-mile infrastructure using a shared infrastructure and subsidy-for-outcomes model.

Core mechanisms: (1) Shared Infrastructure Mandate: All operators receiving UBIF capital must participate in a shared duct, fiber, and tower network model — eliminating duplicate buildout and reducing per-household cost by 40-60%. (2) Outcome-Based Subsidy: Government subsidies are tied to actual connectivity achieved, not capex deployed.

Operator receives baseline subsidy upon achieving 50% coverage; additional tranches at 70% and 90%. This aligns incentives with actual results rather than making investors whole regardless of adoption.

(3) Spectrum Efficiency Requirement: UBIF recipients must utilize TV White Space and shared spectrum in addition to licensed spectrum — expanding capacity without requiring new spectrum auctions.

(4) Cross-Border Regional Corridors: Fund pre-approves high-priority cross-border broadband corridors (US-Mexico, East Africa telecom belt, South Asia fiber corridors) to reduce regulatory uncertainty and enable regional economies of scale.