I hope this was an idea for user selected “temp” class uploads.
To have a recurring cost would be unneeded. If they want it past the temp class timeframe then its really permanent.
To have a recurring cost adds a lot of code to the core and requires a constant checking of billions pieces of data to see if rent should be paid. Plus the attack surface is increased because of the increased code and complexity.
And I still contend according to all I’ve explained above that there will be no need for deletions past the initial stages of the network. Storage is going to explode greater than the 10x in 5 years and bandwidth has been increasing at over 2 times per year and this is supported by the current trends, current research and current industry indications for decade(s)