i.e. not Open Source. What a shame.
At least they provide full schematics here, which is better than many other products do.
C64 PSUs are C64 killers, which is why I feel strongly there should be as little as possible in terms of barriers to getting a replacement.
Yes, it is far better than the alternative (no schematics), as at least we can learn how it works without reverse-engineering, as well as build our own legally (just not sell).