We combine a structural model with cross-sectional micro data to identify the causes and consequences of rising concentration in the US economy. Using asset prices and industry data, we estimate realized and anticipated shocks that drive entry and concentration. We validate our approach by showing that the model-implied entry shocks correlate with independently constructed measures of entry regulations and M&As. We conclude that entry costs have risen in the U.S. over the past 20 years and have depressed capital and consumption by about seven percent.

This is a key year for the evolution of international markets. The global economy is experiencing the most severe downturn since the thirties, it is temporarily leaving a path of sustained growth that characterized the last decades, and is facing an impressive decline of trade between countries. Banks are going bankrupt, the stock market has crashed, rms are going out of bu- ness or drastically reducing their production and exports, workers are being red and investment in new business creation or innovation is shrinking. Meanwhile, consumers con dence has dropped at its minimum, aggregate demand has been declining for months and expansionary policies and int- national coordination have failed to counteract the crisis until now. It is quite likely that all this will change sooner or later, but at the end of this crisis our understanding of the macroeconomy may change as well. In front of these crucial events, this book is not an attempt at proposing a radically new way of interpreting macroeconomic phenomena, and, as a m- ter of fact, it is not even a book on macroeconomic theory. My more modest goal is to collect a number of insights derived from recent research on the role of competition and innovation in the analysis of three topics: business cycles, trade and growth through innovations.

Deregulation, privatization and internationalization of the telecommunications industry has brought about enormous changes within both the European and world economy. The dynamics of the Internet and the recent wave of innovations in the telecommunications and computer industry have given rise to new opportunities for entrepreneurship, employment and growth. No doubt, the dynamics and imperfections of today`s information markets raise crucial challenges for Western Europe. The changing patterns of innovation in the digital economy have forced governments to consider new strategies to promote innovation, network effects and growth. In response to these developments this text presents new approaches to macroeconomic modelling, growth theory and trade analysis. Still further, the deregulation policies of OECD-countries are analyzed. An indispensible text for academics and professionals who want to deepen their knowledge of how the New Economy revolution continues to change the economy.

This book was originally published in 1999. At this time, the US economy had recently restructured itself, moving away from an industrial economy towards one based on information, while the European Union and Japan were left to worry about rising government deficits, inflexible businesses, persistent unemployment, and workers inadequately trained for the information age. Why did the US economy move beyond its chief competitors? This collection suggests that at least some of the answers to the pattern of divergent development can be found in the role of the entrepreneur. By examining the process that entrepreneurs play in the economy, the essays in this volume make a fundamental contribution to our understanding of the macroeconomy. Each chapter clarifies the role of entrepreneur in economic theory, the function of small and medium-size enterprises that they found and build and the impact of the innovations introduced on employment, productivity, and economic growth.

Economics: Private and Public Choice is an aid for students and general readers to develop a sound economic reasoning. The book discusses several ways to economic thinking including six guideposts as follows: (i) scarce goods have costs; (ii) Decision-makers economize in their choices; (iii) Incentives are important; (iv) Decision-makers are dependent on information scarcity; (v) Economic actions can have secondary effects; and (vi) Economic thinking is scientific. The book explains the Keynesian view of money, employment, and inflation, as well as the monetarist view on the proper macropolicy, business cycle, and inflation. The book also discusses consumer decision making, the elasticity of demand, and how income influences demand. The text analyzes costs and producer decisions, the firm under pure competition, and how a competitive model functions. The book explains monopoly, and also considers the high barriers that prevent entry such as legal barriers, economies of scale, and control over important resources. The author also presents comparative economic systems such as capitalism and socialism. This book can prove useful for students and professors in economics, as well as general readers whose works are related to public service and planning in the area of economic development.

New data show that countries that regulate the entry of new firms more heavily have greater corruption and larger unofficial economies, but not better quality goods. The evidence supports the view that regulating entry benefits politicians and bureacrats.