[lam95]

In fairness, their wealth is pretty much dictated by their companies share prices, right?
I believe Tesla eventually want to release a $25,000 model (reaching a wider audience) so it will be interesting to see what happens if they really do that.

Yes, that's right. Tesla is in the spotlight now, but I would not forget from such a company as Space X. The impact of space in the global economy will only grow. And successful companies will add value in the same way they did with railways a century ago.