Demon Lord Ramiris tries to argue her way into moving to Tempest, where there's great food, hot springs, and ample entertainment. Rimuru happens to walk into the argument and comes up with a way to make use of Ramiris's skills.
The reason no one did it before is 
because there was nothing to gain from it.
سبب عدم قيام أحد بذلك من قبل هو
لأنّه لم يكن هناك ما يحقّق ربحاً له
Der Grund, dass das
bisher nicht gemacht wurde,
No se hizo antes
porque no era rentable.
No se ha hecho antes
porque no salía a cuenta.
Nous ne l’avons jamais fait,
car il n’y avait rien à y gagner.
Ma se non l'ha fatto finora
Ninguém tentou fazer isso antes
porque não havia nada a ganhar.
Прибыли это не сулило,
вот никто им и не занимался.