A contract is just a piece of paper with some provisions and rules written on it. The document means nothing if the individuals, companies or parties involved in the contract don't hold their partners to task. This is where a contract dispute can arise: when one individual, company or party doesn't uphold their end of the bargain, the other side can file a lawsuit to finalize the contract dispute and figure out what remedies are available to fix the situation.
This may seem obvious and pedestrian, but it is important to realize this because some companies don't stand up for themselves or their rights. As such, their company is damaged.