Let the Punishment Fit The Crime - Mandatory Jail for Crooked Bankers

I don't understand why society thinks it's OK to send a criminal to jail for stealing $200 from a corner store at the point of a gun - because that's violent - but won't send a crooked banker to prison for defrauding investors and stealing millions or losing investor millions.

Let the punishment fit the crime.

If one person robs a liquor store, he may put the cashier, owner, and patrons in jeopardy and that is a crime worth some punishment.  Perhaps 10 people's lives and familes are affected. 

But if a crooked executive at a banking company gambles with the savings of bank clients and stock holders, that affects the tens of thousands of employees, share holders, businesses that rely on them, and in the end the taxpayer expected to bail them out.

That's tens of thousands if not millions of people affected.  That's retirements, dental work, college funds, businesses and then jobs, families futures, vacations and all the other hopes and dreams of the people who had no control over reckless behaviour. 

The injury to any one person is less than a gun injury, but the total damage is vastly more to society.store robbery?

I advocate for mandatory jail terms for any banker accused of criminal behaviour, and that they are exempt from using company assets to protect themselves in the legal system.  If that was a law, no company by-law could protect them and they would be punished to the level that they deserved. 

When will society see that a crime against society has more damage than a