Optimist_Prime_First_of_his_Name
2 years
What highly profitable business models are dominated by only a few companies - e.g.
1. Digital Ads: $META, $GOOG, $AMZN, $AAPL (soon)
2. Railroads: $UNP, $CSX, $NSC
3. Rating Agencies: $MCO, $SPGI
4. Cloud: $AMZN, $MSFT, $GOOG
5. Exchanges: $ICE, $CME