hmmm... The cloud hosted hashing, if sold, would still be hashing with CEX.IO/GHASH.IO. Selling it would not solve or help this so called 51% attack issue. Now if you owned your own equipment, which you clearly indicated you don't, moving it to another pool would reduce GHASH.IO's pool speed. Selling your cloud hosted service does nothing to prevent this 51% attack everyone is worried about.
So with this being said, I could care less what you do, why don't you keep you cloud service there???
I thought it would be better for Bitcoins decentralization if less people used their services?