Personally I think it's even unethical that people or companies get benefits just because they have bigger wallets.
You will end up with some companies that are way to big and have way to much power.
Billy Bob probably things the same.
Walmart comes to mind. It demolishes small, inefficient, businesses. You would think that NOBODY would buy from them, knowing what a terrible company they are. Oh, wait! It's about prices! People may not like Walmart but they buy from them based on price alone.
On what planet would a no-account company like Billy Bob's Hardware Store (a mythical company in this post) wind up farther up the list of replies than Amazon? He does what, maybe a hundred grand per year? Amazon does a 350 grand per minute. And Amazon's price (or their affiliates price) might actually be lower and I often get the stuff with 'same day delivery'. Of course I'm going to order from Amazon. Just the other day I bought a single item: a box of 12 cheap ball-point pens. I could have driven downtown to get them at Office Max but, no, I just click a few buttons and they showed up the next day. Same for the windshield wipers I needed to replace on my truck. We have half a dozen auto parts stores and the big dealerships. Did I bother to get out of my jammies and drive to one of them? Not a chance. A few clicks and they were here the next day.
Funny thing: Amazon's prices are not the lowest around. But free next-day delivery and sometimes same-day delivery makes up the difference. Of course I want them at the top of the list!
But that's not the point! What gives some government the right to tell a private business how to run their business as long as they are ethical. The US has gone through company breakups and it hasn't worked out as legislators would have hoped. The breakup of AT&T, the breakup of Standard Oil - these didn't provide any consumer benefit at all. Instead of behaving like good corporate citizens of a larger organization, the new, smaller, entities were now free of corporate shackles and off they went, themselves monopolies.
In any event, if somebody thinks they can model Amazon, they're free to enter the market at any time. The problem is, Amazon has a 24 year headstart. And it's going to take a trillion dollar investment to compete.
Sure, let's kill off the successful, efficient, businesses and let the incompetent rule. That'll work!