I do own businesses that employ low wage workers, and have managed them myself. The claim I was responding, and am disputing, was that paying workers above market rate will result in benefits for the business.
There are very few businesses who target the upper middle class or those with a little bit of disposable income that can afford to go above and beyond for their workers, like Nordstroms, Costco, Apple, Trader Joes, etc. If you notice, these businesses are all located on the rich side of town, and usually there's only 1 or 2 for medium size cities.
You simply won't survive as a business if you pay workers more hoping to get something out of them when the customers don't value it, and reality shows this. If you want to increase the standard of living for low wage workers, one needs to support politicians who will pass legislation mandating paid time off, de-coupling health insurance from employers, parental leave, increasing minimum and overtime wages, reducing # of hours before overtime kicks in, etc.
This isn't a problem a single business can solve, it's a society wide issue that needs a society wide solution.