It's not hard to argue the ongoing security costs could easily reach that amount. i.e Security for trump and family cost 30 million in 2017 and these families would suffer similar political targeting. Though ofcourse we can argue that trump was purposefully inflating those costs to enrich himself. But even then we're only talking 120 mil per family for quite possibly the rest of their lives.

While I think there are many people would forgo that protection or pay less for protection it's one of the ineffable personal balances of security/cost/ease of life that I could easily see a jury saying "if they went the perfect security route then they could easily spend this much".

You can't ignore that cost just because they'd normally never earn enough to pay for that security... much like a company that causes an illness is on the hook for cost of treatment even if a person couldn't normally afford to treat themselves.