Over the past decade leading tech companies—notably Meta (Facebook), Alphabet (Google), Amazon, Apple, and Microsoft—have come to dominate their respective segments in most parts of the world. Some stats: Meta, which also owns Instagram and WhatsApp, has 3.5 billion users across its networks. More than 50% of global online ad spending goes through Meta or Alphabet. In search, Google has more than a 60% share in the United States and more than 90% in Europe, Brazil, and India. Apple earns more in annual profit than Starbucks makes in revenue. Microsoft is a top-three vendor to 84% of businesses.
Source:- https://hbr.org/2022/01/can-big-tech-be-disrupted