why do people buy bitcoin? You can transfer money over a the Internet and there is no head office like in Paypal to stop you. Adoption is key. I am seeing better adoption of bcash than Steem dollars or Steem. Randomly people ask for donations in btc principally and to a lesser extent bcash, litecoin and dash. That is the reality of it.
What would people pay SBD for? It seems people who use Steem dont want to spend money on ebooks. There are some fine ones on Steemfiles.com. why is nobody buying?
I haven't even seen anyone advertising a book on steemfiles. Customers are supposed to magically show up? As you said, adoption is key. People need to start seeing more and more books on steemfiles and start checking themselves. Right now, it's early adoption.