He very certainly meant this was economic greed as well.
Even the worst people in history somehow believed they were the good (or at least the needed) guys and they deserved their riches. Political power always was a vehicle to maintain, defend, multiply those riches. This is why in the best version of that spiel the royals would understand that their position/riches came with very real duties attached. Duties towards those who had it worse than them. But this was already a forgotten idea, even in Chaplins time.
As someone whow grew up around both poor and very rich (including very old-rich) people, I can assure you that the poor people would often share their last penny while the rich ones were mostly afraid that someone might be after their money. Greed is buying a Lamborghini when your neighbour/employee/sister/village starves. Even when you totally earned it using your superhuman work ethic.
Everybody wants to be the good guy in their own story, so everybody will come up with their own reasons why they deserve it (they worked harder than a single mom with three bone breaking jobs) and why doing a good thing is actually a bad thing ("they will waste it on drugs and alcohol"). If you care about your real true self lies like these are a danger to ever discovering it in your life. And you only get one of those.
In the end the question is very simple. Do you care primarily about yourself or do you more care about the people and nature around you? Everybody likes to say they do — and so they lie to themselves why buying that Lamborghini is actually a totally selfless act. But if you realize the world would be a worse place if everybody decided like you, you might be the baddy all along.
So if you want to stay rich you have to somehow get the fact that tou don't do what is needed into balance with your own image of a good person. Aa result you become that attavistic kind of rich person that believes being good is naive and a luxury (no pun intended) they cannot afford. People who want to make the world better are idiots, only you know the world as it truly functions (let's ignore the fact that you profit from that believe). This is a quite common stance among the rich and powerful. Everybody is out to get you. Your game is not doing meaningful things, it is doing things that look meaningful to other rich people. Things become very symbolic. Actually meaningful is naive and dangerous so it must be avoided. These people are rarely ever happy and in the short moments they are, it is because they fell for the lies of their own greatness. We grew up in a world that told us money buys us happiness. To a certain degree it can give us safety and freedom, but after that it comes at a mental price. Greedy people are people who are willing to pay that price, no questions asked. And there are many of them. Remember, you get only this life.