Examples of Monopsony:
1.) Prior to 2011, the state of Texas had almost total control over the K-12 textbooks in the whole US due to its market dominance. Although there are over 1,000 independent school districts in the state, the Texas Education Agency formerly set the curriculum for each course that all districts must follow, and therefore also formerly approved which textbooks could be used. Combined with Texas' large size, in the past Texas' textbook purchases far outweighed those of other buyers. Rule changes in 2011 gave local school boards authority to choose other textbooks.
2.) In Bangladesh, a dozen of power-generating companies have been established in the private sector since 2009. Government of Bangladesh is the only purchaser for these companies.