Monopoly power is like having all the Infinity Stones in the business world. It allows a firm to grow and make cool, innovative stuff. But what if someone misuses these powers? Uh-oh, trouble!

Real-World Example: Imagine Google, Facebook, Apple, Intel, and Amazon. They're like the Avengers of the tech world. But sometimes, they're accused of using their superpowers to squish competition like ants.

When a firm becomes dominant (like the final boss level), they can use that position to eliminate competitors or prevent new firms from entering.

Real-World Example: Think of how some tech giants gobble up competitors. It's like Pac-Man, but instead of dots, they're chomping smaller companies. This doesn't necessarily make stuff more expensive for us, but it can make things harder for other producers and slow down cool new inventions.

Collusion is when firms act like they're one big monopoly. They team up and set high prices, and we, the consumers, have to pay up. 

Real-World Example: Remember when the European Commission fined companies for colluding in markets like canned vegetables and car safety? It's like finding out all the villains are working together, and the prices we pay are the victims!