Consider that M$ uses Linux to switching infrastructure for their Azure cloud.
The question that I have is why would anybody who runs Linux want to use M$-SQL?
Legacy app maybe?
Perhaps for those commercial apps that require it.
Sure saves on server os licensing.
You're obviously not plugged in on the Microsoft news, esp. considering you're using the dollar sign in the Microsoft acronym which is an eye roller enough.
Microsoft's SQL Server has proven over the last 5 years to outperform Oracle in every major metric, and adoption of MSSQL is higher than it ever has been. Oracle is prohibitively expensive for small- to medium-sized businesses, and MSSQL support is astronomically better than Oracle ever has been. We're moving a majority of our major application functions over MSSQL in the next 18 months at a savings of over $1.25 million over Oracle.
Be as cheeky as you wish, but Microsoft is dominating the business software market across the globe. Their latest foray into open source is proof that they don't just want to get along but they want to own it all.
Only someone with a gun to their head and no choice would go this route.... but this does happen from time to time.