> I found the developers had went bankrupt > found them broken, relying on system calls that are undocumented > they removed the system calls it used an it no

> I found the developers had went bankrupt > found them broken, relying on system calls that are undocumented > they removed the system calls it used an it no longer works, so theres $100 down the drain And that is why backwards compatibility is important and why only Microsoft seem to get it (and Linus but sadly that doesn't extend to the userspace, except X11 but dumbheads want to remove that too) - it doesn't matter if the company is bankrupt after you get your program, it will keep in working doing what it always did. It doesn't matter if the OS gets updated with new features and driver support because the APIs will keep working for the older programs that use them (and sometimes even get new features since new programs may also use these APIs - although Microsoft doesn't have a great record here with introducing new GUI APIs every few years, but at least older stuff do not get abandoned). Your $100 (or whatever) wont be down the drain, it'll be spent on something that works for many years to come. In the meanwhile macOS will break half of its APIs and go through three different CPU architectures, ensuring nothing will work.