Mergers and acquisitions: With time, in competitive markets, the companies can absorb other small-sized companies by way of merger and acquisition, hence decrease the count of players within the same industry, creating oligopolies. Companies such as Microsoft, Google, and Apple in the technological sectors have come to oligopoly through the mechanism of merging with other small compa... https://finxl.in/financial-analyst-certification-with-placement-guarantee.html