My business sells office and coworking space online to startups and SMEs. I'd like to know what else I can do besides just selling space as the middleman. What additional value can I add?
Your core value is marrying the buyers and sellers, what is your core value to moving out of the middleman marketplace?
If you can define the core value(s) well, you can consider diversifying to serve the same customer with a different range of products/ services (e.g. furniture, startup program ..) but are you doing it or still a middleman?
I think a good piece advise suppress millions, hope it helps.