So they can pass the savings to you.
There is a difference between doing things properly and cutting corners to save a few bucks. What might appear to be "savings" up front is actually far greater costs to be paid down the road!
I rather pay $50 per kwh in an ugly but functional/ safe place then to pay $90 per kwh in a glamorous building with TV/cable, lake front, etc. Your miners doesn't care as long as it is cool and have enough juice.
Why pay money to put your expensive mining equipment somewhere it will get damaged and probably given no more care than was put into the building when you can pay about the same to get your gear hosted somewhere things are done properly? Cable tv is a good joke, obviously my miners would not need that but they also don't need to be right beside an open window to get rained on! I have been reading various threads around here and while some places like toom.im still offer 2014 prices of $90+ it looks like there are other hosters offering prices more in the area of $70 so it is not like the only choice people have is between "get ripped off" or "barebones plywood data hut for cheap until the weakest link fails".