Comment by coliveira
Nothing you said helps with the issue of valuation. Yes, the US models may be better by a few percentage points, but how can they justify being so costly, both operationally as well as in investment costs? Over the long run, this is a business and you don't make money being the first, you have to be more profitable overall.
I think the investment race here is an "all-pay auction"*. Lots of investors have looked at the ultimate prize — basically winning something larger than the entire present world economy forever — and think "yes".
But even assuming that we're on the right path for that (which we may not be) and assuming that nothing intervenes to stop it (which it might), there may be only one winner, and that winner may not have even entered the game yet.
* https://en.wikipedia.org/wiki/All-pay_auction