You could make that same argument about VPNs in general, which happens to be a 25-30 billion dollar industry. While I may or may not have reasons why a random "average" person might use this service, I find the question confusing... is the product not capable of being a success if people exist who don't want to use the service?

This kind of question always comes up for just about every service ever developed, and as the discussion continues the goalposts tend to shift and the user gets less and less sophisticated and more and more stubborn until at some point you demonstrate a user exists for which I can't prove they want it, and then victory is somehow declared. It is a sport I don't see much interest in playing.

To flip the question: we are providing a replacement for a service that already exists which is used by people worldwide and makes up a sizable market; our replacement is more secure and likely to cost less. Given that beachhead, you can now ask "who else would want to use this service if only it were cheaper and more secure?", and have a really fun brainstorming session.