Okie, just a few comments
"The wealth of a nation can only really be created by productive labour."Wealth of a nation is by free trade, hence the term common wealth. I think u're talkin abt absolute advantage in productivity. No nation will benefit from hyper productive labor of national goods which will oversupply the market and deflate prices and cause recession. Productivity works hand in hand wif trade.
" As the banking system becomes more and more deregulated, opportunistic financiers will gravitate towards manipulating financial Dont see a link here. Y wud the banking system become deregulated??? And opportunistic investors are always "gravitating to manipulate financial phenomenon, whether the banking system changes or not...
"Interest rates will rise to the point where income generated by labour cannot keep up. This will make more people play the numbers game instead of engaging in productive labour " Dont see the link here. Why i/r will rise uncontrolled? If liquidity reaches a certain level, market forces will force i/r to decrease, due to oversupply of credit flow. Even if i/r increase dramatically what has it got to do with income?
The motivation for labor has relatively little correlation to i/r imo, only idiots will depend on passive i/r income to survive.
" the system collapses because there is not enough resources for the majority, who will presumably then violently revolt. To prevent this financiers must create a climate of fear and insecurity that will cow the majority or send them far away to fight distant wars of plunder. In this way, they kill 2 birds with one stone.
"This is one chain of slippery slope argument. Might as well say that to prevent this, we should practise legal genoicide or be communists.

(I think u're critisizing govts like the US that divert their ppl's attention to external wars instead of domestic economic problems. But I doubt this is the real cause.)