Good question. The problems that exist today are.
- exchanges don’t care if their STEEM wallets/nodes go down. Example, Binance wallet has been down for 21 days. Poloniex wallet was notorious for going down. Last time it was close to 6 months. HitBTC STEEM wallet went down 6 months ago and had never been fixed. Exchanges are holding STEEM hostage with no apparent reason.
- Coinbase doesn’t offer STEEM or SBD
- Bittrex is not a multilingual exchange. The rest of the world doesn’t have that option.
- Bittrex could delist STEEM or just decide to abandon the STEEM wallet just like other exchanges have.
F-Coin. I think that's more likely, and they'd easily have the funds and financial leverage to set up their own exchange