[snip the unsubstantiated noise]
Ok true thats what big companies often do. (if they see profit in it)
So lets assume Amazon did this,
Due to the open nature of the blockchain, people would find out, sooner or later. (expect sooner)
The moment this gets found out, several things can happen.
- Miners cartel against Amazon, Amazon blocks no longer get accepted. (bye bye profit, and reputation of the company)
Already refuted upthread.
Amazon can wait until its miners win a block. Amazon can use 0-confirmations for its customers as explained upthread (customers are repeat). Small merchants often can't.
- Miners don't care and continue their business of making money. (the world is bigger than Amazon) Users however scream murder at Amazon and will petition to boy-cot Amazon.
- Nobody cares and Amazon makes a little bit more money than they would otherwise.
You entirely missed the points upthread about how a cartel penalizes everyone else and forces them to join the cartel, e.g. Amazon delays the transactions of everyone else. Etc.
Please comprehend the thread before posting more noise. You will probably need a week or two of studying the thread slowly.