[ETH_start]

Every technology we know of started off as the exclusive purview of the rich and then saw progressive decreases in price as a result of providers fighting for market share by innovating on and scaling up production.

As for immortal tyrants, we already have immortal institutions that are functionally the same. And the activists, dissidents and opposition leaders who challenge their power will be almost certain to gain from immortality just as much as the heads of dominant political parties.

In a rapidly changing world, immortal tyrants will not necessarily have an advantage in keeping a grip on power. Insofar as they stick to their old ways, the nations they lead will stagnate and become more susceptible to foreign influence. And if they are open to change, they may be open to abandoning their repressive ways.

Opposing technologies that can save us from death due to hypothetical fears about the rich seems like a case of cutting off your nose to spite your face.

Aging has a 100% probability of killing you if this technology doesn't emerge within your lifetime. It is strictly a greater threat than a speculated immortal tyrant. And if you think we are so abhorrent that we deserve a measly 80 years before we succumb to aging, then it doesn't follow that you would be so aghast at the idea of those same unworthy beings living longer under repression.