The way I see it, the rich are fucked either way.
They can come down hard on Luigi, make an example out of him, but that would just lead to fucking riots from both sides of the political aisle, and maybe even the lynching of rich people. But they can't just let the murderer go free, otherwise, it's open season on billionaires and there will be copycats who will kill more rich people down the line. So it doesn't matter either way; lower-class America is beginning to wake up, and these plebian sharks smell billionaire blood on the water.
If I were a rich person, I'd do everything in my power to show that I'm helping the poor. Maybe I'd pay for Luigi's lawyer. Maybe I'd pay for a commission to investigate health insurance companies to make sure they're not denying claims to paying customers in need of assistance. Either that, or I'd be packing my bags to leave. Transfer all my hard cash and valuables to Swiss banks and GTFO. Monaco seems like a nice place to run to.
The Kyle Rittenhouse trial was separated along political lines. The OJ Simpson trial was separated along race lines. This is separated between the 1% and their paid shills, vs. the rest of the country that sees the UHC CEO and people like him as scum. And why wouldn't they? They could be next; they could get fucked over by their health insurance company, too. They pay thousands of their hard-earned dollars just to get a "FUCK YOU" in the mail when they need help. So offing one dude to send them a message is seen as acceptable.
After all, not that many Americans die at the hands of ISIS, the Houthis, the Taliban, and the like, but many have died because they paid into a healthcare insurance company that denied their claims. These fuckers have probably killed more Americans than 9/11, and the lack of sympathy for the CEO shows how people are angry at the broken system.