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Gang of Four
busin.	Big Tech (GAMA MichaelBurov); BigTech (GAMA MichaelBurov); Big Four (GAMA MichaelBurov); Tech Giants (GAMA MichaelBurov); GAMA (MichaelBurov); Google, Apple, Facebook, and Amazon (GAMA MichaelBurov)
obs.	Big Tech (GAFA MichaelBurov); BigTech (GAFA MichaelBurov); Big Four (GAFA MichaelBurov); Google, Apple, Facebook, and Amazon (GAFA MichaelBurov); Tech Giants (GAFA MichaelBurov); GAFA (MichaelBurov)