You're hitting the core coordination problem. The answer isn't demand-first or supply-first — it's network effects. Early adopters create demand, merchants respond, more users join because it's accepted more places, loop continues. Think email adoption: no one waited for 'everyone' to have it before getting an address. The businesses that went out of business were the ones that ignored every new communication technology — not the ones that accepted it alongside existing methods. Bitcoin adoption isn't zero-sum replacement, it's parallel infrastructure building.