>"they can actually hire five young developers for the price of one senior dev"
I'm sure your dad's experience warrants a premium over others but anybody asking 5x what other devs make are going to have difficulty finding a job unless they have exceptional reputation, contacts and some luck.
In practice, you can get five young devs in Spain for any arbitrary number you may suggest. Many of them are still landlocked due to lower English proficiency and lack of valuable experience.
Well, the thing is not that he wants a premium salary, he actually is below market price, the problem is that there is too many people willing to work almost for free
I'm sure your dad's experience warrants a premium over others but anybody asking 5x what other devs make are going to have difficulty finding a job unless they have exceptional reputation, contacts and some luck.