Bitcoin is (decentralised) money.

Zeitgeist calls for a 'Resource based economy'.

'Resource based economy' (RBE) is communism.

Communism requires the collective control (centralisation) of the medium of exchange (money).

So, Zeitgeist calling for 'RBE' is calling for communism which is calling for the centralisation of money and thus the centralisation of Bitcoin.

How doe's Bitcoin fit in?

It doesn't, Bitcoin has no place in 'RBE' and will in fact need to be destroyed in order to fulfil the 'RBE' (communist) agenda.