Why do these threads keep popping up? Anyways, Specialist limitations were implemented with the economy and socialization in mind. I'd love nothing more than to craft everything I need any time I want throughout the week (Actually I can, I just have to message a friend), but that makes for an unhealthy, stagnant economy with supply outweighing demand much quicker due to potential buyers likely choosing to craft the item themselves rather than purchase it off the MB on top of more potential sellers. Then prices drop closer and closer to material cost until there's no longer any profit to be made from that item and the Endgame market is dead until next patch.
Tl:dr, Working as intended, go make some friends