RE: Automatic upgrades coming to more PCs still on older versions, says Microsoft
⁜→ Bleipriester, meaner gene, et al,
BLUF: Legacy Issues are a pain in the ass.
You can run 64 bit programs, instead. So what is the problem?
The problem is legacy programs. Examples are programs for legacy Allen Bradly hardware (PLCs). AB (now rockwell) doesn't do upgrades, so you would have to buy a new version for several thousand dollars.
I don´t know about that but it sounds like ancient stuff.
(OBSEVATION)
I have been a Macintosh (Mac) since before the transition from the "Apple II" to the first generation "Mac." And periodically, I've myself struggling with all manner of issues (Peripherals, Software, Operating Systems, etc). Most recently, the legacy issue has popped up again.
This year I bought an iMac (Retina 5K, 27-inch, 2019) 64GB 3.1 GHz 6-Core Intel Core i5 to replace my iMac (mid-2010) 16GB 3.06GHz Intel Core i3 processor. The most peculiar transition issue has been the notices about my macOS Catalina. I am periodically getting notices pertaining to my legacy software
Norton 360 Premium.
My experience has been that I will lose some functionality over time. The most recent example is the conflict between my HP OfficeJet 3830 All-in-One Printer,
which I purchased this year, and iMac. While the iMac can see the printer and print to it, the scanner cannot detect the iMac and scan to it.
(COMMENT)
The passage of time is not a critical factor when looking at legacy issues. It may be generational in terms of the code in which the systems interface.

Most Respectfully,
R