There may be a prevailing ideology, I'll admit. In the west, and now most of the world, it seems to be material wealth, as measured in exchange tokens. In the future, in some places, maybe other forms of well-being will come to dominate, perhaps measured in stranger tokens.
Either way, I think you're the one making the claims that need substantiation. Years of studying econ hasn't provided me clear evidence that upholds the idea that "economies have goals" other than "economies tend to grow in material wealth" – and even that has subtleties too many to thoroughly discuss on an internet forum.
Neither "capitalism", "communism" nor "socialism" exist except as ill described definitions and abstractions that are misused and abused by academics, politicians and the general public alike.
The actual systems we have are a patchwork of contradictory laws, policies and actions by a ton of different parties.
It's like asking what the goal of "nature" should be. Nature consists of individuals who have their own goals, but nature has no goals of its own.