The stores you mentioned are physical department stores, which have been competing in their own space for many, many years. Amazon originally disrupted the book market...now look at the amount of markets it dominates.
https://www.channele2e.com/news/cloud-market-share-amazon-aw...
AWS is absolutely a monopoly just like Microsoft has a monopoly on Corporate/Enterprise OS's tied to Domains. From a solely cloud based provider - not the Equipment renters or Volume based licensing.
AWS is a monster - Their market share is well over 33% regardless of how many articles you google to link me. I am balls deep buddy. It is well over 33% (At least in the US)
From another User on this thread: "If you look at just the cloud the way AWS does it - running code through their service in various datacenters as a service, it's above 50%."
That user is correct and so is my 'Anecdotal' experience. I'll enjoy my insanity. Thanks!