Not if you eat them first
I guess so, money = opportunities to make more... and if you tax them they move elsewhere, if you've got the funds it can be simple enough to operate as a globalised business and avoid paying tax. You could heavily regulate things but I think emerging economies would welcome western businesses leaving their countries of origins and set up shop their too.
Not in the long run. After a period of growing heaps of wealth any financial system is due to breakdown. When the financial resources of a society are depleted economy suffers and declines. Nevertheless chances of survival are always better when you have more resources at hand aka being wealthy in any sense.
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