Amazon scored higher than both regional and national banks on consumer loyalty, coming in second behind the USAA, according to a new study released from Bain &
Co. The poll analyzed responses from more than 6,000 Americans and found that overall Amazon customers are valuable, controlling 75% of U.S. household wealth, and account for about 75% of
the wealthiest households’ assets. Loyalty could become the key to Amazon's advertising business, too.
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