that would work if the slope of the line connecting the points on your graph was linear. if i ran some experiments it would probably be more like a polynomial/exponential/log type function- which means it would eventually hit a limitlike i said its all theoretical fact. i.e if you had a graph where x was light and light absorbtion and y were the other "links" as y increased so would x, respectively. if it could be a continous line that never ends, you would see where it would surpass 10000 lumens.
What would you consider to be an enormous amount of lights? How many watts would you say is too much for a plant?Genetics limit everything man. Just like you can't grow a 12 foot person by feeding them twice the amount of food a normal baby gets. Even making sure that person had enough water and oxygen, they are still limited by genetics. Plants are no different.
There is a reason that not a single greenhouse in the world grows ANY plants with enormous amounts of light. It simply doesn't work.
Get away from thinking light per plant - try and think sq ft wise. One person might have one large plant or 16 smaller ones in a SoG set-up to get the same yield.What would you consider to be an enormous amount of lights? How many watts would you say is too much for a plant?