This is just keeping up with trends in hotel management.
I have seen this set-up or similar in hotels in Los Angeles, Las Vegas, Denver, Niagara Falls, Toronto, Miami, Berlin, Paris, London. All nicer, well reviewed places including Hilton, Sheraton, Leading Hotels of the World and high end Strip hotels in Vegas.
This system looks like the bottles will be replaced with each refill instead of the other method of filling with larger containers. I hope this sticks, it is better for the environment and it means that all classes of hotels on property will get the same stuff instead of the garbage they give to values/mods.
But I bring my own stuff anyways, I like my own brands.