negotiating prices is as old as farts. Sorry you don't like it but that does not make it unethical.

Even if you go to the grocery store and see a gallon of milk with a price on it. You get to negotiate. Yes, you could walk up to the manager and make an offer, which would likely be rejected, but if the price was too high, rather than make an offer, you would walk away. And so would a hundred other people. That's your negotiation.

If the manager realized customers were negotiating with their feet and wanted to sell more milk, guess what, they lower the price! Just because it happens on a macro scale vs an individual scale, doesn't mean that constant price adjustments are happening in every industry all the time. Everything is a negotiation.

The only place this doesn't happen is if someone begins controlling prices artificially which leads to either unethical monopolies or unnecessary scarcity.