Serenity Caldwell, writing for iMore:

A radical proposal: Leave matching to the service that has matching in the title — iTunes Match — and take it out of Apple Music altogether. Instead, if Apple wants give users their libraries in the cloud with an Apple Music subscription, do it the old-fashioned way: uploading their original tracks. This takes DRM out of the equation, and it turns iCloud Music Library, essentially, into a musical version of Dropbox.

This would be a tedious process for most users, but it would solve the lost library problem and prevent the negatively publicity associated with it.