Any conman worth his salt can sell a lemon, a toxic financial product or snake oil.

In UK naive homebuyers bought leaseholds where service charge and ground rent increased EXPONENTIALLY every 10 years. They even had lawyers, and those greenlit the deal.

Or when banks handed loans to strippers and then sold the loan to 'investors' causing subprime mortgage loan crisis of 2008. S&P were meant to do due dilligence, the 'sophisticated investors' were meant to do due dilligence, but here we are