Case study of Monopoly

Microsoft(MSFT) has been accused of violating the Anti-trust law time to time. MSFT had thelegal problem with European Community(EC).

1. Do you think Monopoly business practice is so bad for the general public's welfare? Why? Or why not? Explain based on cost and benefit analysis of social welfare.
2. Do you think FAANG companies are Monopoly? FAANG are Facebook, Apple, Amazon, Netflix and Google. Do you think Government should regulate and break up FAANG companies?
3. Would you give us another notorious example like Monopoly case in the past (such as Standard Oil, Morgan House, OPEC with high energy price, lately case of INTEL)? Your Monopoly example should be based on high concentration of market share and high abnormal profits.
4. The near future emerging major technology change will be on Big Data, Clouding, Artificial Intelligence, Block Chain and Quantum Computing Technology. Which company will emerge as a monopoly company in those industry in coming decades?
5. Is the current Anti-trust law outdated? Why? For example, Sherman Act of 1890 has only 769 words. If so, what reform is necessary for the current anti-trust law?