During early 2000s, one company XDrive
also gave people free space on internet similar to Skydrive. Initially they gave people 5 GB free space on internet and gave 50GB space on subscription service.
I was using the free 5 GB account for some time. Later on AOL has taken over that company in 2005 and has closed that company in early 2009.
Similarly Microsoft may convert this free service to a paid service in future, once people get used to this service.