If I had to guess the real reason RLC changed all cams to paid would be to cut down on the videos non payers where posting I am sure that was costing them a few dollars for all the DMCA take downs.
You're are correct my tubby friend it would put less of strain on there servers but if they wasn't so cheap with their equipment they would upgrade them to handle the load.
A thought I had was did they turn them all premium to try and drive traffic to the other apartments.
While your theory sounds good on paper to be sure another stranger on the interwebs with your lasagna and hope they won't eat it all and leave you with an empty bowl takes a lot of trust.
I think they should have done this along time ago, although I am not a cheap ass like squirrel who squanders all his pecans on art supplies for the Goddess hoping to get a just one painting of himself. I could have been saving all my berries to spend on something other than dog treats for Eva so that I can have just a moment alone with her.