I agree wholeheartedly with Bob, Brent and Marshall. To my mind, there are two things that haven’t been mentioned.
Firstly, for the last 40-50 years we’ve gradually moved to a disposable society. Razors, telephones, coffee makers, garbage disposers, televisions, ratchet wrenches, what else. The imperative to build rugged items that LAST, and to repair them, has gone out the window under the onslaught of cheap “almost as good” stuff. Regardless of whether the piece comes from east, west or right here at home.
Secondly, to some extent I think we got spoiled during the heyday of the hobby (maybe 70s-90s? Pick your time span) when decent repro parts were widely available. People got used to replacing parts - it was easier, quicker, and didn’t have any performance impact. There used to be excellent repro steel fenders and radiator shells (I hate to think how many bent but by today’s standards salvageable ones got tossed), no longer. So as the hobby grew, many participants lost or never developed the ability to restore. Couple that with the high cost of specialized labor to restore versus buying a cheap repro, and it makes the choice to restore even harder. (Case in point - I know I live in California, but the cost of plating is asinine - rechroming bumper slats, for example, is easily twice the cost of buying new from the suppliers).
These are not excuses, only perhaps explanations. As always, my $0.02 worth.