Wealth transfer for future generations

So with 19 mil/21 mil of Bitcoin mined and in circulation and given it shouldn’t be possible to put a inheritance tax on BTC. What does this mean for future generations not born yet or not born as children of hodlers today?

Does this create a dystopian class divide? Or wouldn’t future generations iterate and make crypto 2.0 etc so they can be early adopters of those coins?

Do you see Bitcoin ever being superseded by a better version that could replace it or devalue it?

[and yes I am a skeptic but I’m not a hater I am just one of those people that needs to understand everything from the nuts & bolts level all the way up to the 30,000 ft view]