All we need is just one additional layer - an escrow layer- easily available for any blockchain. Something like TCP/IP is to the internet Plug-and-play sort of thing.
We need a PROTOCOL not just another app . ... and the REAL market, where anybody with a phone is a market player, will take care the rest
https://www.reddit.com/r/Digibyte/comments/9oa7ii/all_we_need_is_a_global_escrow_pool_and_exchanges/