Call their goal the Global Financial Jackboot. The jackboot's construction proceeds according to a fairly detailed blueprint. Maybe you should take a look. There are many reasons for financial anonymity. In short, the possession of financial assets can limit freedom as well as enhance it.
Anonymity reduces the negative impact on freedom that comes from building personal wealth.
Hence there is often a demand for anonymity from freedom-seeking individuals who don't choose to be poor. Imagine how this demand could be met. A truly anonymous bank account would provide much more security than does, say, a Swiss numbered account. A Swiss numbered account is not anonymous. The identity of a numbered account owner is not generally available within the Swiss bank, but is nevertheless known to a small number of upper level managers.