There are multiple sources of divergent positions that can arise in situations where money is exchange for goods and services. There are 2 different types of sources. Those that arise from the content or subject matter of the negotiation (what is being negotiated) and those that arise from the process of negotiation (how it is being negotiated).
Sources of divergent positions - the process of negotiation:
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Line of best fits is the line that goes approximately through the middle of the data points with an equal number of data points above and below it. Line of best fits is a method of calculating medium value instatistics.
Standard terms and conditions are basic terms and conditions of business governing transactions that do not have a definitive contract, usually designed to be included in form documents such as orders. While there may be conflicts regarding standard terms and conditions, they are about the content of negotiation, not the process.
Type of purchase: when buying organisation makes an decision to purchase an item, a buyer is faced with three possible scenarios. The item to be bought could be a straight re-buy, a modified re-buy or a new purchase. Decision on type of purchase is purely an internal decision.

If interest rate are too low and credit is too, cheap rates can fund a spending boom with consumers and businesses buying (investment) more than they can afford to pay back.

Explanation
A monopoly exists when only one company can supply an essential product or service in a givenregion because of significant barriers to entry for any competitor. The barriers can be legal, regulatory, economic, or geographic. Ma Bell case is an example of monopoly. The company was broken up in 1982.
A monopsony is a market structure in which a single buyer substantially controls the market as the major purchaser of goods and services offered by many would-be sellers.
Pure or perfect competition is a theoretical market structure in which the following criteria are met:
- All firms sell an identical product (the product is a "commodity" or "homogeneous").
- All firms are price takers (they cannot influence the market price of their product).
- Market share has no influence on prices.
- Buyers have complete or "perfect" information-in the past, presentand future-about the product being sold and the prices charged by each firm.
- Resources for such a labor are perfectly mobile.
- Firms can enter or exit the market without cost.
Monopolistic competition characterizes an industry in which many firms offerproducts or services that are similar, but not perfect substitutes. Barriers to entry and exit in a monopolistic competitive industry are low, and the decisions of any one firm do not directly affect those of its competitors. Monopolistic competition is closely related to the business strategy of brand differentiation

In order to break vicious cycle of blame, procurement will need to use their negotiation and conflict management skills,adopting a collaborative and integrative approach. Your first action should be to establish the facts that led to the situation where the relationship broke down. Most day-to-day relationship between buying organisations and suppliers do not of course involve procurement staff, so you will need to consult with your business partners internally to establish their point of view of where the issue and sources of conflict are. You should also contact the supplier and get their side of the story - this is particularly to when you have previously identified the supplier as critical or otherwise important to your operations. Ideally you will be able to apply principled negotiation here, separating the people from the issue, focusing on interests and not positions,and then looking for options of mutual benefits.