Why do bitmain only offer the hydro version and the antbox on the cn website?

I Like the idea of the watter cooling it would help for those who have issues with heat and mining in smaller locations thought the price could be a little better considering the price of the S9 right now.

I like the antbox as a one-stop solution though I do think you may be cheaper buying a larger container and building one out to suit but as a commercial buy in option I can see them selling a few.