So the story of the history of capitalism revolves around like 1700s and 1800s tradespeople. The blacksmith owned all his tools and therefore owned all the value produced in his shop. Things were morally right in the world.
History plods along and somebody comes and invents a tool the average blacksmith can't afford, say the Auto-hammer. A rich jerk buys the blacksmith an auto-hammer and declares that since he owns all the tools he gets first dibs on the value of the work from the shop and that will keep all allegedly morally right in the world and it best encourages the rich jerk to keep buying tools for people.
Replace tools with farmland and that is feudalism. As a serf it is imperative that you never question that the blacksmith still brings all the skill and all the labor to the equation before and after but somehow all of his rights over the value of his productivity got taken away.
If you switch from capitalism to syndicalism you cut out the rich jerk. 2 or 3 blacksmiths go in together on the auto-hammer and work in shifts instead. Now they own the tools, skill, and labor again. All is morally right in the world.
If you turn this over in your head honestly for a bit you'll find a number of benefits. For example, in capitalism one guy who may not even live in this town gets to decide if the factory pollutes the local water supply. In syndicalism the factory is collectively owned by the people who work there every day, which means that they all live close buy. Now they have to agree to pollute the local water supply them and their children all drink from.
TLDR, read the definition of feudalism then read the definition of capitalism. You'll find that it was basically just a s/farmland/capital/g (sed syntax find and replace globally) They had to make the change as the economy changed to one where expensive machines were more economically important than farmland.