What would be different if there was no police

[Husar]

They can hire collectively, so can entire neighbourhoods. Taxes can lower if we dismantle the police so that shouldn't be a problem.

Great, so now he pays 200€ for security and gets a tax cut of 30€, where exactly was the advantage again?

Another advantage, the most dangerous criminal is a corrupt cop, who's going to protect the small shopkeeper abuse from them?

How many cops do abuse small shopkeepers?
Who is going to protect the shopkeepers from abuse by their own security guard mafia which has 100% control over their area?