Less money, more sweets?

I never knew this, but apparently confectionery companies do great business in economic downturns. For example:

"Cadbury reported a 7% revenue growth in 2008, Hershey’s profits jumped by 8.5% in the fourth quarter of last year, and Nestle saw profits grow by 10.9% during the same period." PSFK

I wonder what the reason is? Nostalgia? Affordable pleasure? Desire for a sugar rush?

Any ideas?

More on the article here