To ensure effective license key management:

The $59 license fee is a small price to pay for data security. Remember: If a piece of software seems essential enough to want, it's essential enough to pay for – or to find a legitimate free alternative. Don't let a fake license key turn your PC into someone else's cryptocurrency miner.

Mitigations:

Restoring macOS DMG files to USB drives on Windows.

Making macOS installers while on a Windows machine.

License keys are tied to major version numbers. For instance, keys purchased for version 14 may not work for version 15, though the developer often provides discounted upgrades for existing licensed users.