Capitalists keep the profits of other peoples labour. Producing wealth for themselves only. They use that wealth to buy land , resources and power for an indefinite period. To control others and pay them less and less over time for their labour. And yes I agree that is slavery. Capitalism has created a wealthy elite who own (steal) and control all the worlds resources and labour and keep the profits for themselves. Almost any and every major US corporation can be an example of this grotesque failure and inequality created by capitalism in every place on earth. Most countries in the world are capitalists yet the majority of worlds nations have people living on less than 10 dollars a day. Capitalist ideologues seeking to protect their wealth and power indefinitely have destroyed caused great suffering, destroyed ideas, sharing, people, culture and the planet. And not even a few exceptions exist.
Discussion
I'm a capitalist and I don't do those things. I interact with others voluntarily and without coersion. With pure (anarcho) capitilism there wouldn't even be corporations since they are just legal entities. Any individual could only own what they and their community could physically defend.
Anyway, even the crony capitalism of which you speak has brought more wealth to the average person than collectivism ever will. Without it the device you're typing on probably wouldn't exist and you certainly wouldn't own one.