But we’ve also got to distinguish between Marx’s concept of the feudal economy and the capitalist economy. The “haute bourgeoisie” were very different people than the feudal aristocrats of old. They were the ones who destroyed the feudal system and created the proletariat.
In a feudal economy you have the parasitic aristocrats, who operated pretty much exactly the same way Tony Soprano and his crew operate. Then you had a tiny “middle class” of townsmen, men at arms, artisans, clergy, merchants, and so forth. And then you had a vast number of subsistance farmers, who could either be serfs or slaves who work fields owned by aristocrats, or freeholders. In the feudal system, all wealth comes from control over land ownership, and merchants and bankers and such are believed to make money through cheating somehow, if you bought a good for a low price and sold it for a high price, you either cheated the person you bought from or cheated the person you sold to, or both. Transport of goods over long distances is generally impossible, because every feudal aristocrat would demand tolls to cross his land. For example, every bend of the Rhine river had a castle, and each castle would stop each river boat and demand a toll. Which means that there was no way to make a profit trading along the Rhine river, which meant there were no traders along the Rhine river.
Except centralizing states started to put an end to such practices. The king would get his taste of course, but the local aristos would be cut out. And then we see the flowering of capitalism in Europe, and the idea of the king as the guardian of liberty for the common people…he protected them against the local aristos. Kings favored the bourgeois merchants over the aristos/bandits, and the merchants/bourgeois/burgers/townsmen supported the kings because centralized rule meant trade was possible.
Eventually you get factories, global trade, industrialization, and so on, and the aristocrats are pretty much screwed by this. Their entire class was founded on the notion that working, buying and selling were for chumps, to do such things marked you as a peasant. A real man didn’t work, he fought. And what did he fight over? Land. Every peasant produces a tiny amount over what they need to survive, and this amount is collected and sent up the feudal chain, exactly like rank and file mafiosi collecting protection money from businesses, giving their boss a cut, who gives his boss a cut, all the way up to Marlon Brando. Working was the mark of a sucker, STEALING was the way a real man operated.
So, industrialization and trade and finance ruined these parasites, because they couldn’t profit from trade without engaging in trade. Eventually the old middle class of merchants becomes the new upper class. And NOW you can have urban proletarians, before this no such thing existed, they were rural peasants before. You can’t have proletarians without factories for them to work in. So according to Marxist theory, while peasants were exploited by the aristocrats, the proletarians were exploited by the capitalists. Note that we still have this idea that if you buy a good or service for one price, and sell that good or service for another price, you’ve somehow engaged in malfeasance. Buying a proletarian’s labor for your factory, buying raw materials, and selling the finished products for more than the price of wages and materials? You’ve somehow stolen surplus value.