There are lots of benefits, and it's very unlikely a pill, or even a cocktail of pills, could emulate all those benefits.
That said, if you found a safe pill that would merely give the cardiovascular benefits of exercise, or help elderly patients maintain muscle mass, or move obese people to just being overweight, it would be worth tens or hundreds of billions of dollars.
That said, if you found a safe pill that would merely give the cardiovascular benefits of exercise, or help elderly patients maintain muscle mass, or move obese people to just being overweight, it would be worth tens or hundreds of billions of dollars.