As someone who went through the PowerPC->Intel change, it was very smooth. At some point Apple decided that the translation layer would not be supported in the

As someone who went through the PowerPC->Intel change, it was very smooth. At some point Apple decided that the translation layer would not be supported in the new OS (leaving 3 applications for me to unexpectedly stop working, as I had forgotten they weren't x86 apps). Probably why they had pop-ups telling us the old 32 bit applications would stop working recently. Apple could have made "Rosetta 1" open source for enthusiast to maintain. They didn't. I doubt they'll do it now for Rosetta2. Apple does this all the time, pushing aside the old to make way for newer stuff. (MacOS before X, 32/64 bit, a lot of my old iOS apps just stopped working with a note to contact the publisher). My my old snow leopard machine stopped working getting updates from macOS and became useless, but will run windows/linux. Software support requires endless maintenance esp on mac, and Apple limits support to the last 5 years (or so) of machines. The "WinTel" (is that still a term window/ intel) machines seem to bend over backward for legacy applications to still run, which is part of their appeal (esp to business), but probably saddles them with technical debt. The "new" cost of lower performing machines and shorter battery life, is software lifespan.