I have messed with osage for a long time and seen thousands of trees. Maybe 1 in 100 are tolerable bow wood and 1 in 500 are special. The rest are weeds.
Of the trees I have cut for bows, maybe 5% of their mass is bow wood, the rest is firewood. So if my math is correct, at its best, only .05% of the osage growing is bow wood.
One can only make so many walking sticks, riser blocks, and footings with the rest of it