Ubiquiti makes some pretty great products, but too many of them are constantly out of stock. I was definitely giving them a pass in 2020, 2021 etc, but this is starting to look like it is now intentional. They are simultaneously out of the express, uxg lite, UDR, and the USG-3P. The only non rack router that is available in the store is the UDM, which they are no longer advertising without searching for it.
I know that the express and uxg lite are brand new, so maybe they can get a pass. The UDR has been out for well over a year. The UDM is just sort of too expensive to be bought without wifi6, and appears to be on the way out.
Further, the U6-lite is also sold out. This just forces people to pay an extra $30 for the U6+ with wifi6 on the 2.4GHz radio, and I'm not really aware of anything that uses wifi6 on 2.4GHz (maybe new mobile phones etc, but they will be defaulting to 5GHz...).
Ubiquiti even hired some B list actors to do an "Apple like" advertisement on their home page for the unifi express. Why? If you cannot produce enough to sell to people, why advertise for it? Is it to draw people in, and then force them to buy something more expensive?
I'm betting they're selling plenty of product bulk to businesses. Lots of commercial installations are going in, and they probably represent nearly all the revenue for Ubiquiti. The small business or home users just aren't as important to their bottom line. Would they prefer to have enough stock for everyone? Yes. But they're still creating revenue by prioritizing their biggest customer base.