I like the term empath75 uses to describe this situation - 'corporate feudalism', because it really does feel like lords battling for power and influence, while an increasingly impotent state looks on doing little more than wagging its finger.

Counterpoint: I like shopping at Amazon. I used to work there too, but I liked it prior to working there, and continued to like it after I quit.

And I think it would be very difficult for a company to offer the level of convenience and good UX that Amazon does at a much smaller scale. For example, part of why they can get very fast shipping down to a reasonable price is their huge network of distribution centers + their size giving them leverage in negotiations with UPS/Fedex/et al.

If you split Amazon into a dozen smaller companies, the overall customer experience would likely be worse.

Could you elaborate on what you did mean by 'diminished role of the state', and what you imagined?

The only way you can prevent feudalism is by preventing accretion of power. Otherwise, it's a positive feedback loop through and through - the rich get richer, the powerful get more powerful. How exactly to do that is up for debate, and I see socialist democracy plus regulated capitalism as the most practical current answer. Unfortunately it's not a stable position and is prone to failing if any one side can't be kept in check by the others.