As SpaceX's record-breaking $75 billion IPO creates a new generation of millionaires and billionaires, philanthropist Melinda French Gates has direct advice: commit now to giving at least half away, avoid flashy displays of wealth, and remember that no US billionaire built their fortune alone. As SpaceX's record-breaking $75 billion IPO creates a new generation of millionaires and billionaires, philanthropist Melinda French Gates has direct advice: commit now to giving at least half away, avoid flashy displays of wealth, and remember that no US billionaire built their fortune alone. by Soban News (international And National News)