Igor,
Appreciate your reasoning but you have to take some other factors into account.
In the collectors backyard, agree that after you plant those many seeds they grow very fast and may push other vegetation aside (?)....but here you are blocking Nature to perform its share !
In the wild things happen much differently,..
Only a very small percentage of the dropped seeds germinate for lack of the minimum conditions of soil/nutrients/humidity, etc..
- not surprisingly the great majority on the north sides of boulders, walls, ruins, ravines -
(the last drops of rain we had here happened in March ! and still waiting )
Of the few figs that manage to shoot up a tiny trunk, many are sooner or later eaten by herbivores - rabbit, goats, deer, cattle, etc.
Only figs growing in inaccessible places, voiding the approach of those herbivores may eventually reach adulthood, if minimum conditions prevail ..the majority being caprifigs.
I cannot see a fig in the wild, push competitive vegetation aside.. but right the opposite..
Old fig orchards left alone for years by their owners were completely taken over by the more aggressive shrubs and are slowly disappearing engulfed by their dense canopies.
Francisco
Portugal