https://ejournal.seaninstitute.or.id/index.php/JMS <p><strong>Jurnal Multidisiplin Sahombu </strong>is a scientific media as a forum for the publication of research results, literature reviews, and / or ideas from various disciplines. is a peer-reviewed journal published two times a year by the SEAN Institute. All manuscripts submitted to the editor will be reviewed using a double-blind review system, meaning that the author does not know the name of the reviewer and the reviewer does not know the author's name. As for the scope of the multidisciplinary intended is only limited to the following points:</p> <ol> <li>Economics</li> <li>Politics</li> <li>Public</li> <li>Business</li> <li>Civil society.</li> <li>Finance</li> <li>Culture</li> <li>Arts</li> <li>Law</li> </ol> Sean Institute en-US Jurnal Multidisiplin Sahombu 2809-8587 https://ejournal.seaninstitute.or.id/index.php/JMS/article/view/9025 <p>Market structure is an important aspect in determining the level of competition and competitiveness of a business sector. Each business sector has different market structure characteristics, ranging from perfect competition, monopolistic competition, oligopoly, to monopoly. These differences in market structure influence the behavior of business actors in determining prices, product quality, innovation, and marketing strategies. This article aims to analyze market structures in various business sectors in Indonesia and their implications for competitiveness. The method used is a literature study by reviewing various scientific sources, government reports, and national economic data. The results of the analysis show that the agricultural sector tends to approach perfect competition, the trade and micro-enterprise sectors have characteristics of monopolistic competition, while the telecommunications, automotive industry, and banking sectors exhibit an oligopoly structure. Competitive market structures encourage efficiency, innovation, and product quality improvements, thus contributing to increased national competitiveness.</p> Arfah Arfah Zefriyenni Zefriyenni Copyright (c) 2026 Jurnal Multidisiplin Sahombu 2026-09-01 2026-09-01 6 04 1189 1195 https://ejournal.seaninstitute.or.id/index.php/JMS/article/view/9026 <p>Price stability and market control are crucial for maintaining public welfare and regional economic stability. Fluctuations in the prices of basic necessities can impact people's purchasing power, traders' incomes, and production and distribution activities. Tanah Datar Regency, as a region in West Sumatra Province, faces challenges in maintaining a balance between the availability of goods, affordable prices, producer interests, and the sustainability of traders' businesses. This article aims to analyze government policies on price equalization and market control in Tanah Datar Regency. The method used is a qualitative descriptive approach utilizing secondary data in the form of government policies, price information, inflation control programs, and various literature related to price stabilization and market mechanisms. The study results indicate that local governments play a strategic role through price and stock monitoring, market operations, the Affordable Food Movement, strengthening distribution, trade supervision, and coordination through the Regional Inflation Control Team. These policies serve to reduce price volatility and maintain the affordability of basic necessities. However, the effectiveness of these policies is still influenced by supply conditions, distribution costs, seasonal changes, and coordination between economic actors. Therefore, strengthening price information systems, efficient distribution, interregional cooperation, and ongoing market monitoring are necessary.</p> Agil Rivaldo Hazmi Zefriyenni Zefriyenni Copyright (c) 2026 Jurnal Multidisiplin Sahombu 2026-09-01 2026-09-01 6 04 1196 1202