Yeah - Airbnb is generating a lot of discussion as to what extent they are actually disrupting the hotel market. I think two things to consider are location and demographics. In Chicago for example, getting a license to operate an Airbnb is pretty costly. The pushback on Airbnb and home-sharing in general is a huge obstacle to a lot of Chicago operators looking to get into the Airbnb market. Despite the significant cost differences between Airbnb and hotels, it seems that the Chicago hotel market is still doing relatively well. This is true even considering the population shift in Chicago in the last 2-3 years.
I think overall, I think hotels still have the stronghold in the corporate market - I do know that there is a huge pull for Millennials to travel using Airbnb, particularly for leisure. When companies book travel, the default is still to book at a hotel.
From what I know, Airbnb is trying to step up their professionalization among hosts, especially with those cases that you mentioned. But at least in the foreseeable future, hotels are still pretty standard.