Asking why we don't have a high speed cross country railroad in a nation that had most of its airports build out 60 years ago is an excellent pattern match for odd complaints.*

Thinking whether you're a Sinophile is a subject of discussion, and then most damningly, your closing thought being whether other people think "the west will prevail" shows there's a lot more going on here than the idea that maybe overcapacity is good. Way more than I expected, so I'll leave it at "overcapacity is bad". :)

* n.b. for future arguments I'd avoid this, a map shows china's is cross country in that you can piece together, exactly one route that is high speed only, requires multiple transfers, and leaves you about 20% short of a full horizontal trip cross country while taking a winding route that wasn't designed for it.