By Luc Olinga The rout in financial markets since January has claimed a big casualty: tech billionaires. The market rout is a personal disaster for many investors Apart from the defensive sectors and energy, the rest of the economy is impacted by the uncertainties surrounding growth. The aggressive increase in interest rates by the Federal Reserve to crush inflation, which is at its highest in 40 years, has raised fears of a sharp slowdown in economic activity. These fears are a bad blow for growth assets like tech groups that are bets on the future. Unsurprisingly, tech groups have been strug…