Of those only not having to keep the equipment running is correct.  Any electricity costs come out of the gross revenue.  It is no different then mining your own coins and putting aside enough to pay the power bill.  Any damaged equipment has to be replaced from gross revenue and reducing the revenue until replaced, once again the same as hardware you own.

I think IceDrill is a good project but come on, if those facts came as a shock to you, maybe you shouldn't be an investor, generally speaking.