You can always buy stock through a broker @Jack1443 @Thais7
There won't be any share offer directly to hosts. AIRB (the NASDAQ ticker/symbol when it launches) is expected late November to mid December (possibly next week, see Bloomberg link below). FYI the company is hoping to raise $3b in the IPO and has high interest debt of $2b to pay off immediately. The company also has employee stock options to honour. The company also has a pending class action lawsuit from hosts which you can read about here
https://community.withairbnb.com/t5/Hosting/Host-initiates-class-action-lawsuit-over-COVID-19-cancel...
The endowment fund is pretty much meaningless unfortunately, just a pie in the sky PR exercise and imo, a poor excuse to hosts. It would indeed be nice to be treated as partners instead of servants.
Just my 2c but I think there is a high probability that many of the larger investors will cash out after launch (leaving small investors to carry any losses). The company did a 2:1 stock split recently to make the IPO share price more attractive to mom n pop investors (presumably so there would be a bigger pool of money to soak up the offering).
It does bother me quite a bit that the company doesn't currently hold host/guest money in escrow accounts, but seems to use these funds for its own operational and (some rather crazy) project purposes. That's something of a worry for all hosts if the company is in fact strapped for cash, unable to live within its own means (18% take on bookings) and you want to get paid for services you have provided.
So... exercise some caution and do your own due diligence.
Here's the latest info on IPO launch date
https://www.bloomberg.com/news/articles/2020-11-10/airbnb-is-said-to-push-back-ipo-filing-to-avoid-e...
And something else to keep in mind
Nevertheless, if you think it is a great investment that is going to make (and not lose) you money, then by all means go for it.
Happy hosting.