Renato was extremely wealthy. Lots of sponsors like Saffa, Martini, Magneti Marelli etc.
Mercury Marine paid him lots of money and than OMC.
He sold probably thousands of tunnel boats over the years.
Later I guess the Italian IRS asked him for a lot of unpaid taxes but that’s a different story most people only guessing about.
I was invited to his house up in the Como mountains for dinner and it’s was an impressive place.