[remram]

It depends who "you" refers to. If you are a company offering a related product, then yes you have to start over and can't use any part of the existing ecosystem. If you are an end-user or a company wanting to use this internally (usually my situation), then the difference is very important.

Maybe it doesn't matter until there are more licenses of this kind though. For now, maybe "BUSL and FSL software" is simple enough, since it's just those two.