So Specialist Recipees are in the game.

[Alahra]

Crafting and gathering is a solo activity. Why do people always ignore that important detail?

The activities themselves are, yes. But the economy is not. Crafting and gathering are still going to be solo activities after Specialist recipes are introduced. Omnicrafters will potentially need to buy more things off the MB than they do now, and that's ultimately the extent of the change.