After four years of postdoc I'm wondering how one develops further. I have set up a research line that is independent from my supervisors, but I'm using the lab resources. That means my supervisors are claiming the project and are closing me in. I've obtained funding for a PhD student, which was based on my conception of a project, but now I'm not allowed to carry responsibility for training of the student. I've come up with a promising new research line for the student to follow, but the idea is instantly assimilated by my supervisors and I feel shut out. I've had a little conversation about the situation, that I expect more independence and responsibility. The message was: "No way am I letting you have responsibility, I've worked my * off to establish the lab and I'm not letting you take profit from that". Actually a while ago a researcher approached me, he was interested in setting up a research line with me. After this recent enlightenment I suspect my supervisor told him I can't be his collaborator. Is this reasonable behavior for a supervisor, shouldn't I be allowed to set up my own (mini) network and develop my own (mini) ideas? Or should I really first get 1.5M in funding and then start building from nothing? I've asked a consultant management development, but she couldn't give any insight. The consultant advised me to talk to a successful researcher in the department, but I think that's a bad idea (feels like gossiping). People who simply continued their PhD work in the same lab are already junior PI or assistant professor, I wonder whether I should try to get funding with my current supervisor and stay a few more years to increase output and move from there, or start looking in other places for opportunities?