Microsoft has a history of using leverage from patents related to android acquired through development on their end, mergers and purchases to extort manufacturers of android devices using these patents and force them to pay Microsoft for the privledge of installing android on the devices they manufacture, something that has earned microsoft more money than their products.
These acquired patents can also allow microsoft to do the same to android developers or demand that changes be made to the android operating system in areas affected by the patents they acquired.
SD micro cards often get lost and wear out, many of them are sold as a result.
Microsoft created the exfat file format, every time it is the default on a storage device microsoft gets money.
Permissions are specifically set in android to prevent android from accessing ext4 and NTFS format on external devices despite their vast superiority to exfat.
I doubt that this is a coincidence.