Anti-competitive practices are actions by firms or groups of firms that weaken rivalry and make it easier to raise price, reduce quality, or keep new competitors out.
Two main types
The concept usually covers:
- collusive conduct, such as price fixing, bid rigging, or market sharing,
- exclusionary conduct, such as raising rivals’ costs, locking up distribution, or using market power to block entry.
Both types can create welfare losses by pushing price above competitive levels and reducing output.
Why economists care
Competition is valuable because it disciplines firms. When rivalry falls, consumers can pay more and get less innovation or lower service quality. The harm is not just redistributive. Some trades that would have happened in a competitive market stop happening, which creates deadweight loss.
Enforcement challenge
Not every aggressive business strategy is anti-competitive. Economists and competition authorities have to separate conduct that reflects efficiency from conduct that harms the competitive process itself.
Knowledge Check
### Which of these is a classic anti-competitive practice?
- [x] competitors agreeing to fix prices
- [ ] a firm lowering cost through better technology
- [ ] a new entrant improving quality
- [ ] a market with many sellers
> **Explanation:** Price fixing weakens rivalry directly and is a standard example of collusive conduct.
### Why do anti-competitive practices matter to welfare economics?
- [x] They can create deadweight loss by reducing output below competitive levels
- [ ] They always lower prices for consumers
- [ ] They make entry easier
- [ ] They eliminate market power
> **Explanation:** When competition weakens, some mutually beneficial trades no longer occur.
### Why is enforcement not always simple?
- [x] Because authorities must distinguish efficiency-enhancing conduct from conduct that harms competition
- [ ] Because all business conduct is anti-competitive
- [ ] Because prices never reveal anything useful
- [ ] Because firms cannot influence market outcomes
> **Explanation:** Competition policy evaluates effects on the competitive process, not just whether a firm behaved aggressively.