[quote=@LokiLeo789]
Is it possible to create an ever-expanding Holy Site?
[/quote]

In terms of money output? Nope.

In terms of how much area it actually covers? [i]Possibly.[/i] Jvan probably could, since she deals with living, growing things. Teknall made a factory that produces Stellar Engine Collectors autonomously to form a Dyson swarm around his personal star. The Deadwood Sepulchre is a living Holy Site, though it doesn't spread beyond the Forsaken Craglands.