This is the wrong way to look at it.

In a K-shaped economy a business will not succeed by making quality goods at reasonable prices. Who are the customers for that? The middle class no longer exists.

Every successful business will do one of two things. Some will make ludicrous luxury goods at preposterous prices for customers that are not price conscious. Others will make mass produced garbage at insanely low margins in vast quantities.

The shortage is only the strategy in the sense that a large part of luxury goods is status. If you have a luxury product, you have to make it into a status symbol to get sales. Limited availability increases desirability. If something is too popular, wealthy people don’t want it anymore at any price.

The only solution is to end wealth inequality and restore the middle class. Tax the rich.