I wonder how this will impact MariaDB's future development. In theory the original APIs were forked under an open license, but new MySQL features probably can'

I wonder how this will impact MariaDB's future development. In theory the original APIs were forked under an open license, but new MySQL features probably can't be legally replicated with application compatibility because of the API. Also, how does this impact things like Wine, as the MS API set has never been open source (to my knowledge) Actually in a wider perspective, I wonder how this will impact emulators in general.