The issue I find with capitalism is that it attempts to swallow all other systems. For instance, consider another system religion--it is not uncommon for this system to have, overlaying it, a role in the capitalist system--the capitalist system's operation and the religious system's willingness to participate becomes prerequisite to the religious systems being able to operate or function at in the first place--just as the earthworms continual existence is secured only in so far as the dirt isn't suddenly translatable into economic value and consumed for profit. It's like capitalism is an unconscious dogmatism that everyone participates in because...and that why remains fuzzy.
I just don't appreciate the way capitalism, when interfacing with other domains, effaces all their values and meaning--though I suppose you could levy such criticism against any system, i.e. a closed religious system presumably wouldn't read any meaning into your available capital (ah, but so many of them do!), just as capitalism wouldn't read any value or meaning into your practiced religion. Though of course these things are not clearly demarcated and manipulate each other.
Thanks for pointing this out. It has helped me consider this further--as always, surprise surprise, things are more complicated than I'd first thought.