The development of next-generation positioning, navigation, and timing (PNT) systems to supplement or replace the aging Global Positioning System (GPS). SpaceX has formally proposed using its Starlink satellite constellation to provide low-Earth orbit (LEO) navigation services, highlighting its potential for resilient, high-bandwidth connectivity that functions independently of traditional military-run signals. Academic research and technical reports further examine how signals of opportunity from various private satellite networks can be harnessed to improve accuracy and spoofing resistance for drones and maritime vessels. While these innovations offer a robust backup against electronic warfare, some experts express concerns regarding system privatization and the potential for subscription-based access fees. Technical simulations reveal that satellite trajectory accuracy and geographic latitude remain critical factors in determining the reliability of these emerging space-based navigation alternatives. Collectively, the documents advocate for a diversified PNT ecosystem to ensure global security and economic stability.