What's Your Market Definition?

i can see a market definition that covers search engines and utube. I don't get you what a market definition would be of amazon. And the truth is, sota somewhere, yes? The truth is sort of somewherein between. It depends on which angle do you look at it from. i can already kind of seeas people saying, amason getting into health care, is this horrible monopoly expanding? If you look atit from health care, it's clearly amason increasing competition. T same the same thing with aple doing a bank. They were creating more competition.