[YouWhy]

The home in question is thought to have belonged to the wealthiest family around - which, for a society where economics are generational and local, practically means super-rich.

In modern societies such super rich people flock to major cities, but in pre-industrial societies relocating would leave familial assets under-attended. Accordingly a well adjusted wealthy person would arrange for an excellent standard of living adjacently to their possessions

[marginalia_nu]

From what I understand it, affluent Romans typically moved back and forth between countryside villas in the summer, and a smaller residence in the city during the winter.

Also Roman economics were not really very local. The Romans had a large road network and were very mobile and traded even farther. You have for example Pelagius, a figure in church history, who was born in Britain and died in Egypt.