Instead of people pushing prices up you find every one under cuts each other by the smallest margin to get the quicker sale.
You're right that's a risk but ultimately the market will determine the correct price - it has to be healthy for the platform going forward to operate on "clean prices" determined by genuine market supply & demand rather than FI's algorithm balancing payout risk against revenue?
Any new system will take some bedding in & building up users trust will take some time but as long as it's transparent & clearly explained (something FI may need to improve on!) then everyone can understand how & why any price has been determined - MUST BE A GOOD THING IMHO.
The market in any player will quickly reach price equilibrium & liquidity should naturally follow as any price anomaly will attract buyer or sellers depending on whether the price is seen as too high or too low given market opinion on that player.