Your statement was only true prior to the invention of capitalism. After capitalism, its possible to gain wealth without stealing it from workers. Capitalism is

Your statement was only true prior to the invention of capitalism. After capitalism, its possible to gain wealth without stealing it from workers. Capitalism is more nuanced than many say it is---see the Rerum Noveram by Pope Leo XIII for an intro to the nuance of the issue: he warned owners not to abuse worker, but also called workers not to destroy property of owners or other individuals. Oppression and wage-theft still occur, bit they are not necessary parts of capitalism per se, but rather abuses of the system. If workers are truly free to choose their jobs, they can leave a bad situation, and that puts market pressure on businesses to do better.