I left Italy because I was looking at a future in which I would have been one of those 5 young devs that got hired instead of someone like your dad.

I am still young and am always relocating to find better projects and conditions, and its been working for me in this past 5 years. But now I know that there is also a lot of companies out there that are willing to hire people from across the globe and let them work remotely.

Those jobs are not easy to find, and are a small minority in the job market, but they are a beacon of hope for really good devs for which relocating is not an option. You (royal you ... which means potentially your dad) will generally get good money but might have to set up your own taxes, insurances and benefits, so it's not as hassle free as just being a normal employee.

Relocation, IMO, is always an option. Just speaking English is enough ... and English is not hard.