Government Lies, Cheats, Defrauds :How ?

Let's take this big whopper from Europe:
In 2001 the Euro was introduced in the majority of countries making up the European Community. The promise was made that the European Central Bank would follow a monetary policy modeled after that of the Deutsche Bundesbank.
Further, an agreement was made that no Eurozone country would be allowed to bail out another. The ECB would not be allowed to buy the obligations of any member country.
By agreement, member countries would not be allowed to incur budget deficits of more than 3% of their respective GDP in any year, and the total debt was not to exceed 65% of GDP.
Nice plan: it actually made me bullish on the Euro for a long time.
Unfortunately, whenever a little problem pops up, rules are thrown out in a hurry.

In 2009, Greece discovered a "little" problem: It's reported financial data could not be relied upon as debts were much higher than previously disclosed.

Imagine that Greece was a company. What would have happened ? It likely would be forced into bankruptcy and the management would certainly be prosecuted for misleading the public, fraud etc..
What happened instead ? No-one has been put on trial !
Instead of letting those who foolishly lent money to Greece suffer the consequences, the IMF and the governments of the world that support it, have committed YOUR money, the money of the tax payers of the world, to bail out Greece.

But wait, it's not Greece or the Greek people who are helped here: It's the worlds large banks instead. Because they are "system-relevant" and if they would have to take the losses, they might fail ?

In the meantime, few days go by that there's not a gruesome story told in a major German magazine or newspaper on how "speculators" are guilty of causing all these problems.
How does it work in today's democracies, that governments can dish up a big pile of horse manure and the mainstream media and (therefore?) the public just eagerly gobble it up ?