Hot take: the problems here are cultural. Consider these data points: 1. The US is a country of migrants (ignoring the blight of slavery for now), whether those be those seeking a better life from Europe originally, later China and later still Central and South America. These are all people who uprooted whatever lives they had and legally or illegally migrated to the US. IMHO you still see echoes of this "pioneering"…
Jeremy Howard (Fast AI) had a talk that hit home when discussing startups in AU vs US, why he left and why he came back: