That dude needs to learn how to effectively communicate his proposal so that a layperson can understand. His constant reference to blockchain technology without providing some relatable definition made me shut him out. However, I decided to do a brief research (less than 30 minutes), and non-extensive (I visited just two IBM Blockchain site pages).
I think this is what IBM's Blockchain site is saying. It sounds like a peer-to-peer network that manages data: access, storage, administration, and security. For peer-to-peer, think about Napster from 20+ years ago where people logged their computers on to a network, which enabled them to share music and movie files by granting access to each others disc drives and download/copy them to their local computer. In this file sharing model, the original owner of the file didn't have the ability to control access to the files and restrict who was allowed to be a file provider. Anyone who logged onto Napster could host or retrieve files.
One of the basic features about Blockchain Technology is that the data owner chooses what type of network to share the data: Public, Private, Permissioned and Consortium. Each network type has its own data management model (the data collected and centrally managed or is each data owner responsibility for maintaining and securing their data and grant access permission to the data) level of access restrictions and data security. After the network type has been chosen, the use of it is based upon trust with the other contributors/users (I will assume that there is some form of vetting done before allowing other into the blockchain network). For a general example, the site says that Bitcoin uses a public network - anyone can join.
So, that guy mentioning Bitcoin was confusing to me, because I inferred that Blockchain Technology required the use of Bitcoin or cryptocurrency to perform transactions, and that is not the case. Bitcoin is just one type of Blockchain Technology user. This technology is also used by traditional financial service companies, businesses and healthcare organizations, because it provides a high level of security and completes transaction extremely fast:
So, it appears to me, that this what that dude should have been trying to explain. The current Airbnb model requires that they facilitate the booking and financial transaction, and charge the guest and host fees (they are a middle-man). In a Blockchain Technology model: 1) A data network is set up (I guess dude would be the one who volunteers to do that) ; 2) People are invited to join the network (as a host your data will be your listing information, including calendar, booking app, and amenities). Since each participant is responsible for their own data and hardware, the network administrative cost should be low, but there probably will be some sort of fee because the network administrator will have overhead costs (or maybe they will want to run ads on the portal); 3) People who are looking for a place to stay will be able to run a search based upon their criteria and make a selection among the search results. The booking would be done directly on the host's computer system via the peer-to-peer network (there will be no middle-man to collect fees); 4) Trust is probably achieved by the fact that every bit of data is traceable (network participants are granted permission to join (probably after some level of vetting) and the enhanced data security (data records are replicated across several locations, making it more difficult to highjack or corrupt) that Blockchain Technology offers; 5) A cryptocurrency transaction would probably be more secure than using your traditional financial instruments which are tied to all of your personal identification.