You will probably never hear this story from the mainstream media.
The core problem of today is that the world has far too much money, debt, and other financial assets, compared to real goods and services, at current prices. More tickets have been sold than there are seats in the house, and the ticketholders know it too, after 2008.
Among all the options in this no-win situation, probably the best is to recognize that all those financial assets aren't worth as much as first thought, and devalue them, by devaluing money itself, with massive inflation.
The elites are trying to get a little inflation, but not the massive kind that would pave the way for stability and growth by recognizing reality and spreading the pain proportionally among all holders of the assets. This kind of shock threatens to turn public opinion against the elites' system by exposing its core nature of financial asset inflation, and the elites probably will only use it as a last resort.
But a single country that does this has a lot to gain, even by doing it part-way. By devaluing its currency, this country would achieve both stability and growth well into the future, by drawing in demand and capital. (Did the corporate media of any country ever tell us that?) This country would be breaking faith with the global elites, to be sure, but there's no real moral reason to stay inside what is essentially a collusion among the top politicians, central bankers, and top financiers of major countries.
This is precisely why the global elites simply cannot tolerate any act in this direction by any leader. This is why they "generously" bailed out Greece multiple times rather than see it leave the euro -- putting the Greek people through hell, but at least maintaining their system. This is why they fought tooth and nail against Brexit.
With Brexit, British politicians will have more political incentives to pursue Britain's own economic interests, and that will be devaluation and inflation.
The global elites know, if one or two country's inflated financial assets are reconciled with reality, reality is coming after their own assets next.
Your opinion is well made. And you are right when you say that the brexit has or will bring a major economic effects on the economy worldwide. Though this may signal a positive or negative impact or an advantage or disadvantage but we will not yet know who will gain and profit and whose countries will suffer. The cause and effect in the economy is hard to predict but we can only determine when its already there.