Google may not be a pure monopoly but is a monopoly, by some definition of it. https://www.economicshelp.org/microessays/markets/monopoly/ https://www.economic

Google may not be a pure monopoly but is a monopoly, by some definition of it. https://www.economicshelp.org/microessays/markets/monopoly/ https://www.economicshelp.org/microessays/markets/monopoly/ This article states that 25% of market share may be sufficient. That is not how I learned it in my economics classes: there we said it's 60% and values below that could be oligopoly (a small number of companies holding ~90% market share). As for why it's bad: a single provider may choose to degrade their service, or increase charges, or create an unacceptable TOS. They would likely not be able to do that if there is an acceptable alternative.