I bet those kinds of mines are profitable only because the person doing the mining isn't paying the electricity bill. I consider that to be abuse of the spirit of the contract, and tantamount to theft.
I know, the cables are a mess. We're still rearranging stuff.
I'm now thinking that you aren't familiar with any large multinational real estate corporation and how they run their business. They frequently have to "keep the lights on" in an unoccupied spaces for various reasons: marketing, general safety, technical impossibility of not air-conditioning a fraction of a shared space, long term contracts, etc. It is not only theft, it is actually a win-win and overall savings.I know, the cables are a mess. We're still rearranging stuff.
Here's an example from a nearby location managed by www.cbre.com : A specialty grocery/supermarket closed and with it two nearby specialty restaurants. Discount grocery/supermarket is going to move in after remodeling the main spaces and ramps to their specification. The restaurant spaces will be used only as a temporary storage of the fixtures of the anchor store while remodeling is done. Meanwhile megawatts of power and a/c are sitting nearly unused and cannot be completely turned off because the remaining local businesses are "open while remodeling".
From your comments about the hanging Ethernet cables I can surmise that you have an experience with catering to the OCD (obsessive-compulsive disorder) end of the spectrum of customers in the data center businesses. On the other hand I for many years worked in the entertainment and related businesses. Completely different personalities are involved.