Not that starting a new Guild was unheard of. But no one in their right mind would do it unless they had enough resources.
Academy Guilds were practically self-funded and were only given their own territory once they accomplished feats enough to gain territory points.
So, until such time, they could only rent offices allocated by the military.
It sounds thankless, and it usually was. However, the guilds have long existed because they also acted as a recruitment ladder for the empire's elite families.
While they would all be military members, their guild allegiances usually dictated which group they would join if they managed to graduate.
And this scrawny boy just announced to everyone that they would be starting a new guild?
"HAAAA!" Sneered Baldy, who took one look at Luca and thought he must be deluded.
"Kid, you are lightyears away from being able to start a guild with your little buddies over there." Mocked the shiny head.