[gjulianm]

> In the real world, there is more than one sandwich seller and they compete with each other. When was the last time you non-consensually bought a sandwich?

But that competition isn't perfect. Right now, for example, there are very clear indications of price gouging with the excuse of inflation.

And it isn't even just with food. See the renting market for an example. People who had enough money to buy a house to rent it earn more money, and people who didn't spend more money because they need a house to live (and moving is a very high barrier for a lot of people).

But I think the most important example is jobs, mainly jobs with a low barrier of entry, which are mostly taken by poor people. People that don't have enough savings/time to get better education or to find for better jobs have to get whatever they can, so their employers have a lot of power to set low salaries: the employer can deal with an employee leaving or taking more time to fill a position, the employee probably needs a job quickly to pay the bills.