Yes, and while Charles Darrow, who became the first millionaire game inventor due to the game's success, profited substantially from royalties, Lizzie Magie, the original creator of the game’s concept, sold her patent for just $500 and received no royalties.
Showing it’s unsustainable is kind of the point of the original game Monopoly is based on: The landlord’s game.
Yes, and while Charles Darrow, who became the first millionaire game inventor due to the game's success, profited substantially from royalties, Lizzie Magie, the original creator of the game’s concept, sold her patent for just $500 and received no royalties.