Switching from Windows to Mac, you may have existing commercial software packages to deal with. There's a good chance that the commercial package is available

Switching from Windows to Mac, you may have existing commercial software packages to deal with. There's a good chance that the commercial package is available on Mac, or there's a set of choices that are functionally equivalent, and commercially supported (large companies or indie developers). That's a less likely proposition when moving from Windows to Linux (which itself is a less true statement today than 10 years ago, but isn't the same as moving to a Mac).