Fully resuable spacecraft are the critical enabler for regular, low cost and safe access to space, and such access will enable space utilization in ways we've only dreamed about in the past. Much as the early ARPANET laid the foundation for a multi-trillion dollar enterprise revolving around the internet, early reusable spacecraft like the Lynx suborbital vehicle will establish the beginnings of a multi-trillion enterprise revolving around the Earth and our solar system. This talk will lay out a vision of a future space-based Trillion Dollar Enterprise based on a series of realistic and fun "What-ifs."