Because the government is a centralized force that has a monopoly on the use of force.
Imagine if i decide that if you say that the holocaust didn't happen, im gonna lock you up in a cell with rapists, robbers, killers, etc. I...ME!...you see how literally cringe this sounds???
Well that's law in Germany, that is what the government does, the government has the power to do nepharious things punishment free, and sadly through culture...idiotic masses get brainwashed into thinking this is not only okay, but it's GOOD, this is why Germans dont protest the hate speech laws...they celebrate them.
You see, no private corporation would ever go 4...7...14....23 trillion dollars into debt, i used those specific numbers because that's the public debt of France, UK, China and U.S.
Just think of all the drugs that are legal and illegal in the U.S , NONE of them should be illegal, yet the only legal ones are the ones that the average idiot doesn't even know they're drugs...as for the others well it doesn't matter if you're consuming drugs alone in your private property...if you get caught its jail.
I could go on and on and on and on.