Lots of places do it. Disk space relative to code size is extraordinarily cheap. Just look at the granddaddy, GMail. Google gave away 1 GB per user back in 2004

Lots of places do it. Disk space relative to code size is extraordinarily cheap. Just look at the granddaddy, GMail. Google gave away 1 GB per user back in 2004 because they figured the ads would support it.