Glamour Freebies

why do magazines like elle glamour playboy(basically any) in europe give cool freebie products ?

Like bags, makeup, books, dvds,cds . this includes sunday papers. Why are the consumers in the USA left out of this?
wouldnt US consumers buy magazines more if they had cool stuff added with them? like Freebie Cosmetics, tshirts,movies,handbags,etc? bottom line may be to increase revenue but why dont they also target US customer base, some of us love airport layovers only to be able to get the euro version

To increase revenue and sales.It attracts people to their products and make more people want to buy them.