In spite of all the pre-IPO hype, there are a lot of headwinds against Airbnb's unchecked growth:
A) 80% of inventory listings on Airbnb are entire houses and apartments, but there is a limited inventory of these rentable second homes. In 2019 the total count of second homes in the U.S. was 7.4 million, accounting for 5.6% of the total housing stock. Europe's housing stock is less than 5%. Many second homes are not-rentable since they are on the shabby side: cabin in the woods, fishing cabin by the lake, etc.
B) The working remotely mandates means that many owners of second homes - potential Airbnb hosts- are now working for months from their second homes (this is what I do currently), which means a segment of the rentable second homes are off the market
C) Real estate sales of new and existing houses are booming, primarily city-dwellers buying houses in suburban or second homes in vacation areas and moving there. This further depletes the limited housing stock of second homes.
These are the reasons why listings on Airbnb dropped from 7 million in 2019 to 5.8 million today.
D) Due to the pandemic, popular are rentals of holiday villas/stand-alone vacation homes in resort areas, sector dominated in the U.S. by Vrbo; urban inventory, dominated by Airbnb, is definitely out of favor.
E) Airbnb is embroiled in legal actions all over the world. Many municipalities have imposed severe restrictions on short term rentals (min 30-day stays, maximum 90 rental days per year, etc)
In my view, to sustain growth, Airbnb has to go big in the following directions post-IPO: a) expand rapidly in the APAC region, and b) enter hotel distribution as a full-fledged OTA and challenge the duopoly of Booking and Expedia. To achieve both, Airbnb will be facing even greater headwinds: high costs, acquiring new core competencies, new tech stack, new expertise, and new business models.