In the latter case (where you describe "robbing a hundred people"), are you referring to wage theft? Because if the employer is not using violence or threat of violence, then by definition they are not "robbing" people.
That was the entire point of my post: theft and robbery are not the same; robbery is theft + use/threat of violence.
And then you used the analogy of breaking into a house when nobody's home. And I pointed out that carries stiffer penalties than wage theft, despite not involving the use or threat of violence against a person.
Your attempt to split hairs to justify the near complete lack of punishment for wage theft is not succeeding.
As I said earlier, put people in jail for theft and fraud and you'll see those things decrease. As it is now, too often (white collar) crime __does__ pay.
And yet you'd still go to jail for doing that. Potentially for several years depending on the value of what you stole.
Wage theft orders of magnitude larger than that burglary would still typically only get a slap-on-the-wrist (relative to the ill-gotten gains) fine.
To turn your attempt on its head: why is robbing one person an offense that gets incarceration, but robbing a hundred people may not even get you prosecuted?