Ever thought about how niche markets could reshape ETF innovation? There's an interesting angle here—what if we designed investment products that tap into underserved sectors with genuine growth potential? It's not just about picking random markets; it's about identifying overlooked opportunities where demand exists but supply is fragmented. The ETF structure provides liquidity and accessibility, making fringe market segments suddenly investable for the broader retail audience. This kind of lateral thinking in financial product design could unlock capital flows toward emerging economies and unconventional sectors that traditional finance typically ignores.