Why did Mail.ru limit the files uploaded to the “Cloud” to two gigabytes?

The company comments on these restrictions as follows:
- Statistics show that now the cloud volume of an active user is on average 3-5 GB, so this space should be enough with a margin.
- according to internal statistics, today less than 1% of users store in the Cloud at least one file weighing more than 1 GB.
Let me remind you that a year ago, from December 20, 2013 to January 20, 2014, Mail.ru held a promotion to distribute “Clouds” a terabyte of storage for free and forever. Then she was accompanied by a scandal related to ambiguous formulations in the user agreement, which ended with its correction . Nevertheless, the action brought “crazy traffic” to the “Cloud”, and now, it turns out, when the promotion tasks are solved, you can get rid of “less than 1% of users” that store heavy files and take up more than average 3-5 GB?