The following five charts demonstrate how Amazon has taken on retail - one of the most venerable sectors of the US economy, one which employs nearly 16 million workers... and won.
No growth in department stores in the past decade:
Department stores vs Internet shopping total sales:
And annual growth, or lack thereof...
At the current pace, online sales will surpass total General Merchandise sales in the next 2-3 years.
Finally, the market cap of Amazon alone is more than 8 times the entire US department store index.