I should correct or clarify two things I said earlier:
It is not purely an altruistic loss-leader for BTC adoption. Blockstream also offers some paid services over the satellite network. (Payable only via Lightning, in BTC.) The service to download the blockchain is free; and they have no way to charge for it, because it is broadcast. You can also broadcast your own messages over the satellites, for a fee. I have no idea how much money they do or don’t make from these services.
My question about usage stats was inadvertently a trick question. Of course, there can be no reliable usage stats: The system is the most anonymous possible way to obtain the Bitcoin blockchain. Although Blockstream themselves surely must have stats on how many kits they have sold, there does not exist any way to track who uses it with DIY hardware. It is a way to obtain the blockchain even more anonymously than through Tor.
The file option is actually interesting to me. The ability to broadcast data over a wide area for effectively a low one-off fee could have interesting use cases, particularly if the size of the satellite dish required could be minimized. Of course, that's not really a Bitcoin thing. It doesn't appear to be a source of income for them though. They have an info page and it looks like they're currently averaging 1-2 messages a day and I bet most of those are of the test message type.
https://www.blockstream.com/satellite-queue/I see that they now offer download of the Bitcoin source code via satellite. No Internet required to get the source! LOL. Craight Wright must love that.
Presumably a "just for fun" proof of concept type thing but fair enough.
They keep improving the satellite service, adding things. Those here who run Lightning nodes may be interested in the Lightning Network gossip snapshots.
Needless to say, over the years, Blockstream Satellite has seen plenty of FUD. Much of it from the usual suspects.
As to not hearing about v2 and not being able to tell how many users... Well, it's not exactly all over the news and one would assume Blockstream would be crowing about it if it was a roaring success.
Unfortunately, it's a bit tricky digging the info out of their site so I'm not sure what the bandwidth looks like. They say 25x what it was for v1 but that was only pushing 6MB/hour. I'm sure it wasn't saturated but it seems likely that grabbing the full blockchain would take a while. Vapourminer might be better off visiting his local library.