Ironically, it's more the equivalent of "tech debt". The older the deity is, the more the worship of that deity has changed over time, and so the more convoluted it gets ... because the religion is very different from itself over time.
E.g., the 8th century Yahweh wasn't a monotheistic god, he was just the specific god of a particular tribe. They didn't think of him as all knowing or all powerful, they just wanted a cool story to show how their tribal god was so tough he beat up the gods of the local superpower, sort of a "my dad can beat up your dad" thing. The concept of monotheism didn't show up in Jewish religion for another 300 or so years
Capitalism isn't the "best system we've got", though... it isn't even the system we are all using right now.
We've never operated in anything like a "purely" capitalist economy, and the socialist policies most western countries have put in place are wildly popular and few people would want to live without them.
Countries that intelligently choose when and where and what things should be operated on a capitalist basis, have better outcomes.
Healthcare? Not something anyone should make money off of. Basic housing, food, water, power... these should be immune to market forces.
At the same time, capitalism drives fantastic technological and social innovation within its swimlane. We just have to pre-define what things people should be able to make money doing.