which argument do you think is right?

[Robert]

Many businesses now use computer records to collect and track information on their customers' shopping habits — a strategy called data mining.

Retailers use this information to make decisions about what products to carry, or even to tailor their advertisements to particular customers who have bought specific products in the past. Businesses say the practice leads to better understanding of, and better service for, their customers, but consumer advocates worry that consumer privacy is at risk. Which argument do you believe is right?