That's a great question. For most people (outside the community) you wouldn't want to have a money if you don't have things to buy with it. This has been the steering factor for us from day one and still is.
A chunk of our users actually do figure out how to acquire bitcoin specifically to use Bitrefill's services, because we let them do things they otherwise couldn't do. One example is the kids in El Salvador buying in-game items online: If you don't have a credit card, and your parents don't have a credit card there's no other way to get that sweet skin for your FreeFire avatar :) That's just an example, we have dozens of use cases like that.
That said, we have limited resources and mainly focus our energy on people who already have coins to spend.