We’re perfectly capable of building electronics that can run for many tens of years without issue… it’s just that such things don’t get built because that’s not profitable for manufacturers. If an organization like NASA puts in an order for computers or handheld devices specifically designed to not break for long stretches of time, it wouldn’t be a problem to fulfill said order.
You mention billionaires and then list off new money entrepreneurs. Don’t conflate the two. There are jobless people born into billion dollar family dynasties that do absolutely nothing for humanity. They hide and live out their lives entirely for them.
What are _you_ doing to leave a long-lasting meaningful impact? Billionaires are people too, just with more money. Having money doesn't make you "just ego".