Money that sits in a Reserve is of no value to an economy, it is not actively moving. So people that hord money are not creating an economic vacuum. The more they hold on to it, the more their assets lose value. So most wealthy people reinvest their wealth to create greater wealth (ROI).
This generally means greater numbers of economic transactions; economic cash flows.
What I don't like is where large companies buy out smaller companies to remove competition and/or remove competing technologies; to allow price fixing. A form of monopolizing markets regionally.
A battery company produced a car battery that could be completely discharged by putting a wrench across the terminals and it would not blow-up. After being completely discharged the wrench is kicked off (hot) and after 30 minutes the battery recharged itself enough to start the car.
Union Carbide used its influence to block the Battery Manufacturer (Staff of Life) from being able to purchase the materials to build their battery. Not being able to fill their contracts, they were forced out of business.
I believe it should be illegal for any corporation/business/person to block access to resources needed by other businesses to produce their products unless the same restriction applies to all businesses/persons without exception. Businesses should ONLY be allowed to enter into mutually beneficial agreements to benefit both businesses.
Drilling for Oil as another example:
http://ecowatch.com/2012/03/07/homeowners-and-gas-drilling-leases-boon-or-bust/
Oil companies can destroy aquifers supporting an entire region, with no "real" legal liability. The only time justice is served is when individuals attack soft targets at the highest levels to destroy corrupt administration of oil/gas processing; largest investors, stockholders, representatives and senators that vote in support of oil/gas negligent efforts ... (terrorism/vigilante/...). Unfortunately most terrorists I read about seem to be unknowing puppets of large corporations and they attack useless targets that just weaken their own intents. Eh, just venting.
Large systems of people are needed to prevent oil/gas companies from locking out the ethical influence of individuals. The trend seems to be to steal resources, sell related products, deplete resources, steal other resources, sell products ...
Corruption = Unethical Allocation of resources and/or opportunities
Legal System Corruption = Illegal Allocation of resources and/or opportunities
The vacuum you cite seems to be most strongly related to corruption.
I look forward to having your insights explained from a perspective that I can relate to. I think there is something here, I just can't get my head wrapped around it.