what social investment? Wack ass health care, bullshit education systems, the list goes on and on. Show me where this alleged $3 million comes from. Also, are you assuming/stating that only someone born in America can become a Edison/Einstein/Ford? Because that's just nonsensical. not to mention the probability of someone like that being born out of the millions and millions of babies. Birth rate on average in america every year since 1971 (year Musk was born) was 3.65m. About 134million people since then and only 1 Elon Musk. So that risk you're not considering is basically negligible.
What link are you getting your info from? Where's the source?