How does the 20/80 Rule apply to $SP100???

Top 20 Giga-Caps  add up to more than $10,000 Billion
Bot 20 Mega-Caps add up to less than   $10,000 Billion

Just look at the Top 5:
$AAPL $1.6 T
$MSFT $1.5 T
$AMZN $1.3 T
$GOOG $0.95 T
$FB $0.6 T

$SPY