This will be a success. There is no need to sell an amount comparable to the Tesla Model S. It's Ferrari's first entry into the premium 5-seat EV sedan market. There are enough people who would pay any money to have an electric Ferrari. The fact that it's a rather everyday car—and not a supercar—makes it a very attractive option for rich people who need to show off. Design is also pretty good for the task. It doesn't compete with existing premium EV sedans but really stands out. It's unique, and that is its value prop. Should it look like a regular Ferrari but electric, it would compete with Ferrari's combustion engine supercars and would inevitably lose. It also shouldn't compete with the Porsche Taycan—a very nicely designed EV. The general public is not the target audience for this car to offer a generic design. So, Ferrari's unconventional design is the exact right choice.
P.S. It’s kind of like when Porsche entered the SUV market with the Cayenne, which didn’t have a conventional SUV look but still crashed the market.