Think of it like domain names, google.com is the most popular domain name, but is not in the dictionary.
I probably wont be buying anything from the title market called “electronics” because who knows who is operating it. I will go to the market that is the most promoted with the most products I am interested in.
For that market to be most promoted the operator will invest in marketing and public out reach, and will entice sellers or at least have the products that people want on their marketplace.
If one day they fall out, it doesn’t really matter we will find the next market that is doing good business to buy our products. It is not like we lose anything because someone has a name, what we intend to have is good service to buy goods/services. A single bad market does not mean suddenly we lost something.