I'm going to have to start riding a few developers!
You are assuming those apps are still supported which may be a big assumption.
I'm making no such assumption. By "riding", I meant "begging" in those instances in which it's necessary.
Well, it certainly pays to try!
Until I advised him that it was 32 bit only, the first developer I contacted thought his app was either 32 or 64 bit. (He didn't realize that it included one framework that forced it to run at 32 bit only.)
He's already updated his app.
Oh, and a second developer intends to update his app, so two out of three of my critical apps are now safe.