It's hilarious and predictable that in the middle of talking about greedy Walmart, they also malign the fat cats as hateful towards Blacks and women!
The most important point in the video is that Walmart has razor-thin margins: under $3 for every $100 of items sold. If Walmart completely stopped building new stores and used the total profit from last year for raising wages for their employees, then the increase in the hourly wage of every worker will be approximately ... $2.20.
Today, the starting hourly wage at Walmart is $11. The rough maximum for such an employee would be $13.20. The entire profit of Walmart is not enough for a baseline wage of $15 per hour.