10 ideas for businesses that sound rather illegal

Faking your own death is called pseudocide. There could be a business helping people do that.

Hypothetically, how could you murder that person without getting caught? You give as much information about your target and about yourself, and they come up with a perfect plan.

Okay this clearly exists, without the obvious "tax evasion" being explicitly mentioned.

I'll add that there is a difference between tax evasion (illegal) and tax avoidance (legal).

A business that puts you in touch with people that you can buy off.

A swiping app to meet the perfect mercenary for your needs.

An app that shows you all the empty homes so you can commit burglary. Maybe you could even book them to make sure no other burglar goes there at the same time.

The idea would be to help people find ways to consume drugs legally or within a grey legal area, even drugs that are generally outlawed. This may or may not be legal, but I wouldn't be surprised if aspects of it would be prohibited.

This could be about how to find and/or buy seeds from plants that are illegal to grow, how to find hallucinogenic plants are legal to grow (if any), which countries allow the sale and/or consumption of certain drugs, etc.