depends on several different factors... you cant say everyone needs 1 g/ lbs. That's the simplification and reasoning of a complete moron...lean mass, training styles, metabolism, drugs, all these factors come in to play...
for the average chump 200 grams may be good enough for optimal gains
for a larger gymrat with some respectable mass 300+ grams is not unlikely.
and for the that ifbb massmonsters 500+ grams of protein is not unlikely either