In the context of digital documents, books and textbooks, when I hear app store, I think about concerns that the public might have, concerns about interest groups, lobbyists, syndicates, quasi-government organizations, nationalist agendas, and conspiracies reaching into the highest levels of government.
Some Americans have concerns that all but political scientists are underinformed about what some bureaucrats' agendas might be with regard to the Web, behind a facade of some telepersonable Democrats in the White House. The current administration presides over an almost Ford-era executive branch which includes new organizations forged on an anvil of fascism with a hammer of terror.
In the current political climate, in the present day United States of America, there exist numerous partisan, bipartisan and nonpartisan interest groups as well as numerous lobbying organizations each having an interest in the information available to the public, the information in the news, the information on the Web, the content of certain documents, certain books and certain textbooks.
Some Americans have concerns about state participation in what can be referred to as a ghastly molecule of information corporatism. For instance, there are a few contentious American history topics, social studies topics, topics including the years of the George W. Bush administration. Some such topics were a part of a Texastbooks controversy (http://www.washingtonpost.com/wp-dyn/content/article/2010/03/17/AR2010031700560.html).
While many Americans have opinions, including about a wider set of content-related topics, a free marketplace, with a diverse set of products, and distributed, decentralized consumer processes, by elected and well-informed schoolboards, is how we do things in the United States of America.
Many Americans are still somewhat upset about when a syndicate tried to indicate that digital textbooks should be sold to schoolboards across the United States of America via a centralized app store model. Many Americans are somewhat upset about sponsored stories in places of socialization, free speech and assembly.