They need the poor to help them feel better about themselves. They want to be able to look out at the unwashed masses from something expensive and congratulate themselves for being so blessed.
They just want the poor to die at the same rate they are replaced by new workers.
You gain the gratification of making an already miserable life even more miserable. This might mean nothing to you, even disturb you, but then (to use Kropotkin's phrasing from An Appeal to the Young), then you will be a socialist, you will be a Revolutionary.
The real rich elite are not choosing between Paris or Barcelona. People who have to choose one of the destinations cause they can only afford one are not the enemy. The real rich people have waaaay more money.
That wasn't my title, but I think it's part of the lefty "libs bad" thing regarding people who are centrists or support social liberal causes and capitalistic corporate behavior. I don't know really, I think it's just some russian troll bot garbage that got caught in the zeitgeist.