The resveratrol in food such as wine is very small- on the order of 100 micrograms per liter. To get a therapeutic effect, you would likely need to take much more (via commercial tablets or capsules), just like the experimental mice (25 mg/kg body weight) and the researcher in the story (5mg/kg). I take much less myself - 20 mg/day at 70 kg. Maybe I should up my dose?
According to your numbers, I need to drink 5 liters of wine per day. A lot of people aren't so concerned about their health and wouldn't dedicate themselves to such a task, but luckily I'm very persistent...