Throughout Chapter 17, we are introduced to oligopolies, which is a market with few sellers that produce similar/identical products. Moreover, this means that each firm has the power to heavily impact the market based on the quantity they choose to produce. All of this interdependence amount to the idea of game theory based on how these companies interact with each other. Oligopolies are between impeccable rivalry and a restraining infrastructure. They deliver not exactly a superbly focused firm would yet more than an imposing business model. Firms in an oligopoly can consent to work as one and frame a cartel, a genuine illustration being OPEC. However this can be made troublesome with hostile to trust laws and the troublesome of collaboration between two firms. The measure of firms in an oligopoly can influence its yield and its evaluating. In the event that there are more firms in the market, they will look increasingly like an impeccably aggressive market. Cost will abatement and approach negligible cost and yield will get nearer to the socially effective amount. The financial aspects of collaboration includes amusement hypothesis and the detainees' predicament. The detainee's situation and regardless of whether to admit parallels with the levels of yield a firm creates at. It exhibits that, despite the fact that organizations collaborating may offer benefit to both sides, it is still hard to keep up.

Chapter 16 is about monopolistic competitive markets. Oligopolies and monopolistic competitive are both tied to monopolies and competitive markets. Monopolistic competitive markets has numerous sellers and free entries and exits but the products still has certain distinctions that differentiate them.  n this part we see that the best approach to discover benefit boost for monopolistic contenders is the same as syndications in the short run and there are benefits and misfortunes. Nonetheless, similar to a focused market, over the long haul a monopolistic competitive market achieves zero economic profit, which is the point where normal aggregate cost squares with cost. The harmony in a monopolistically aggressive market is unique in relation to the balance in a splendidly focused on the grounds that every firm in a monopolistic focused market has abundance limit and every firm charges a cost above peripheral cost. Monopolistic rivalry likewise has the deadweight misfortune that imposing business models have because of the markup of cost over peripheral cost. Because of the item separation in monopolistic competitive markets, there is promoting and brand names.

Chapter 15 goes over imposing business models in market circumstances. A restraining infrastructure is a sole merchant of a decent which has no nearby substitutes. Dissimilar to focused markets syndications are not value takers. Imposing business models in a market are the value creators. The costs restraining infrastructures charge surpass their negligible expenses. Interest for products which are imposing business models have a tendency to be more inelastic. Be that as it may, if imposing business models set their cost strangely high purchasers will choose to discover other options to the overrated products. Imposing business models can never accomplish the level of benefit they might want since when they raise their costs higher the amount purchased by buyers is diminished. For certain situation where products are important to a general public government will intercede and make confinements on organizations.

A firm can be described as an imposing business model if its market has a boundary to section. In the event that a market has an obstruction to section a solitary firm possesses a key asset, the administration gives restrictive rights to the single firm to create its great, and the cost of generation is more proficient for a solitary maker than a substantial number of makers. Government made imposing business models energize the producers of a decent to make a greater amount of their great. To make imposing business models the administration issues licenses and copyrights. Normal restraining infrastructures are another kind of imposing business model that the administration does not make. Common imposing business models happen when a solitary firm can deliver a decent at a lower cost to an entire market than at least two firms could. Scaffolds are cases of common syndications on the grounds that a toll can be put on them.