What happens when you own all the properties of one color in monopoly?

When you own all the properties of one color in Monopoly, you gain the ability to build houses and hotels on those properties, significantly increasing the rent that opponents must pay when they land on them. This monopolistic advantage allows you to create a powerful income stream, making it more likely that other players will go bankrupt if they frequently land on your properties. Additionally, owning all properties in a color set can deter opponents from investing in those properties, further solidifying your control over the game.