Re: There's a news article on this?
In my experience, the management of most companies that have chosen SQL Server aren't likely to move to another RDBMS, unless it's to something like Oracle or DB2. DBAs in these companies don't choose SQL Server. It is chosen for them. I'm not saying that they wouldn't choose SQL Server, rather that the choice in their world doesn't exist.
There are many companies running SQL Server, and especially SQL Server 2005, which ran out of support last year. SQL Server 2008 will be running out of support next year (or soon after).
The last 3 three releases of SQL Server have not offered much to the small to medium DB (read under 500GB). They were aimed at the big boys and Big Data.
This release is, on the other hand, offers some new and worthwhile — in-memory tables with the promise of substantial speed improvements. It will require new hardware with massive amounts of memory (in comparison to what they had before). Database schemas will have to be re-written. The application code that sits on top of the DB will have to be re-written.
This release has the potential to have the biggest impact on current installations of SQL Server since the release of the SQL Server 2005.
I can't see MariaDB-DBs being migrated, but then, they aren't the target here. The management and DBAs of RDBMSs with expensive licence arrangements, like Oracle and DB2, are.
And because so many companies use SQL Server, this is why this news is important.