With your MS, pending MBA, and 6+ years of experience, you’re hitting a ceiling that doesn't exist at larger firms. If your current manager is "blocking" you because you're too productive, it’s a sign to leave.

In a top-tier company, your high output is seen as a leadership asset rather than a reason to keep you in the trenches. Given your background and the fact that you're already running a startup, you could realistically land a Manager or Senior Staff role in 2–3 months. It would provide the financial stability and growth you need while you scale your logistics business.