Well talking about Feudalism, the economy was very different back then.
Money wasn't yet able to buy you everything, your birth family would matter much more. So feudal lords weren't driven by profit (profit didn't really exist as a concept as it does today) but by other values like glory, etc. Not to say that they weren't greedy, because they were indeed, but they certainly didn't think about infinite growth or perpetually finding ways to make shareholders richer, like your corporate lord would today.
Money wasn't yet able to buy you everything, your birth family would matter much more. So feudal lords weren't driven by profit (profit didn't really exist as a concept as it does today) but by other values like glory, etc. Not to say that they weren't greedy, because they were indeed, but they certainly didn't think about infinite growth or perpetually finding ways to make shareholders richer, like your corporate lord would today.