How long can price increases sustain a declining business? Altria Group (MO -1.02%) stock has long beaten the odds. Since the release of the Surgeon General's report on smoking 60 years ago, usage has declined and tobacco companies like Altria had to pay out hundreds of billions of dollars in legal settlements. These challenges didn't prevent Altria's stock or dividend from rising. However, with tobacco consumption continuing to fall, the company hasn't found other revenue sources to compensate for this dro ...