I think this goes back to the decentralized free market.

On a free market, you are always getting the best possible deal due to the presence of competition. If you are not innovating and improving the price, you will not get any sales because someone else will beat your value proposition.

Cheap flights are hard to find because there are few other options. Barrier to entry is too high, but what if anyone had the ability to buy and sell things as long as they had an internet connection?

Global wealth goes up and more people are fed.