Inventory on different platforms question

[Felis]

content of inventory is saved server side
How the content of the inventory is sorted is saved client side to save traffic.

but those stupid files are 10kbs... I think we pay enough subscription to store that amount of data on their servers

multiply it by the amount of players who play at the same time world wide.
Or wish some players the good old time from 1.0 back, where it needed 10 seconds to show us our inventory?