Surprising that you still have that idea even if members are discouraging you and there are hindrances to creating your idea, it's also a good idea to start small and do not in a hurry to create something big, build your reputation first by creating small platforms or project that will benefit members, soon people will realize how good you are and trust and support you, do not give up yet if you want to contribute to this industry.
Actually, some members are discouraging me as most offer escrow services, the escrow platform will harm them a bit i guess.