There is more to it than to say they failed.
I think some are very good cultivars from California,(for California)but replacing a whole Orchard that have Calymirna figs ,productive and still young(let say 30 years young),is not something that can be done without spending a tone of Money,and loses till the new figs become adults,at about 7 years old.
So large orchard,Bussiness, are reluctant to risk and loose it all.