For sure. But most people aren’t well known enough to have strangers murder them. If someone wanted to put a bomb in my house they could, I don’t have any security or cameras, I don’t even lock the door that often. But why would they care?

But yeah, it’s wouldn’t just be the rich, anyone famous enough to be known and awful (or just unlucky) enough to make someone genuinely wish them dead would be at risk. ‘ordinary’ people rarely have the power or influence to piss someone off enough to murder them. Although I’m sure the number of mysterious deaths of neighbours and exlovers etc would go up.