A gargantuan "everything company" like Amazon is the very definition of a monopoly. In any functional society this beast would have long since been broken up before becoming dominant in multiple industries. At this point, they're pretty much emblematic of the rot at the core of western society.
>A gargantuan "everything company" like Amazon is the very definition of a monopoly
No it's not, the definition of a monopoly is a seller without any competitors. Stop spreading lies. Amazon has plenty of competitors for what it sells, but it has a large market share because its products and services are generally cheapest.
The word you're thinking of is "Conglomerate"