Well yes but at 2-3tx/sec, that supports a large flea market or a mid-sized costco, not a global economy. Even onboarding everyone onto Lightning would take 75

Well yes but at 2-3tx/sec, that supports a large flea market or a mid-sized costco, not a global economy. Even onboarding everyone onto Lightning would take 75 years, the entire rest of the block reward, about a trillion dollars worth of electricity and many gigatons of e-waste.