>>40664945People want to help because they have interests. Mutual benefit exists; people want things, and want to do things, and want to make things. Again, if they didn't, we could all have stayed hunters and gatherers and went on our merry way. But as soon as horticulture and pastoralism occur in societies, people are able to specialize. And they do, consistently, in every settled society. Capitalism alienates people from the work they do, and what they produce through that work, which is the reason for people "not wanting to work." People hating their job is not the same as those people wanting to just sit and do nothing forever.
Capitalism is "unavoidable" in the sense that it exists right now and we can't time travel to before the Enlightenment and make it not happen, but there's not some prescribed path for humanity with capitalism as one stop along the way. The spread of capitalism was facilitated through the colonial powers of Europe; the peoples of the world didn't just adopt capitalism because they thought it was best. It was forced on them, either as people to be exploited, or people to help exploit(be they in Europe or elsewhere).