Although my first instinct was that commission free means poor price offerings. That’s probably from my experience with scammy foreign exchange offices throughout my travels.
Yep: that's true in the bond market too. You either pay the commission or you pay through a wider spread.
Even if CryptoRobinHood doesn't attract professional market makers, the spread are likely to be wide because there won't be that many amateur market makers. Money does attract the money-minded.
I think the spreads will be wide, that's an issue that already exists with Robinhood, but it will be interesting to see a legit app try to go against all the other fake trade exchanges, lol. That order book is going to look odd in comparison.