AIS Infinite SMEs research analyzing 3,000+ Thai enterprises reveals a critical gap in sustainable growth. While top 20% SMEs average 1,500M+ baht in annual revenue versus 35M baht for bottom 20%, only 20% sustain growth for 3+ consecutive years—40% falter after 2 years, 40% after just 1 year. The analysis categorizes SMEs into performance groups: "Marathon Runners" (20%, avg 9.3% CAGR, manufacturing-heavy) show consistent growth through data-driven planning; "Acid Wind Runners" (30%, 17.7% growth rate, service-focused) show volatile revenue dependent on large projects. Key takeaway: revenue size and growth rate alone mislead—consistency, diversification, and forward-looking decision-making (12–18 month horizon) separate sustainable operators from high-risk volatility.