It will be dispersed to more thsn a single family. That's the point.
In this case specifically it's unlikely the family sold an asset simply to buy another asset. They've had it a few hundred years, and the gallery has had their eye on it for decades. It's likely they sold it cause they needed the cash, for a new roof or whatever.
If they spend it, then those people providing the goods and services will prosper. If they invest it in a business, then that business has capital to grow, and all those employees will benefit.
In this case specifically it's unlikely the family sold an asset simply to buy another asset. They've had it a few hundred years, and the gallery has had their eye on it for decades. It's likely they sold it cause they needed the cash, for a new roof or whatever.
If they spend it, then those people providing the goods and services will prosper. If they invest it in a business, then that business has capital to grow, and all those employees will benefit.