Sure, but we could move it into more useful waste of money, not resources like water. Maybe start a craze for intricate locally hand-crafted totem poles from locally grown woods.

The point about lawns was that in the 18th C (or whenever they originate - I forget) only the rich could afford them because they were labour intensive. Now almost anyone can afford them and they're not a good signifier of wealth at all: they've become a signifier of decency instead.