The number of people who are willing to start something is MUCH smaller than the number of people willing to contribute once someone else starts something.
But Roam was never built with the vision of being a really great single player product. Instead, it was built with a much grander vision of allowing users not just to read each other’s public notes but also to remix them.
"There are few things less pleasing to the Lord, and less productive, than an engineering department that rapidly turns out beautiful blueprints for the wrong product. Working on the right things is what makes knowledge work effective."