Oh, people valued mainline steam back then, but they had the same basic problem we have now, namely available money.
I do not want to start an argument here, but people like Dick Jenson tried to save some locomotives. Dick broke off more than he could chew (finance), but he tried. Today people complain that the locomotives he tried to save were scrapped because he couldn't come up with the money needed to keep them, but the simple fact is that they would have been scrapped anyway.
And these problems continue today. Nothing is guaranteed beyond today. We see it now at EBT, but all preserved steam today will be gone before our children retire if we don't continue to raise support for this stuff.