Immortality becoming a possibility is also an opportunity for changing our social structures. There's nothing wrong with Bezos or Gates living forever, as long as their social and financial dominance isn't also guaranteed to live forever.
> Removing death from the equation introduces either: stagnation, if it is made available to everyone
Stagnation follows from an assumption that neuroplasticity is zero. That is one of the problems that need solving for immortality anyway, but I don't see why it's unsolvable. If some technique rejuvenates at the cellular level, it could also work on neurons.