The cost for account creation is relativley low, but its a friction I agree. That comes with named accounts. Its a pro and con. Free accounts with random letters or a small fee for a name :). Names come very handy for gaming apps. Also in the Solinterlands case the app creates the accounts for the players. I havent seen yet the problem with account cost escalate. This doesnt mean if a mass adoption happens that wont be the case. Its a good thing that at least now we have RCs separate from HP, so if accounts are in need the RC market should become more alive...