Do we need so many management graduates? Why not include key management subjects to improve basic education rather than forcing professional qualification?

I think the more appropriate question would be are so many management graduates worth their degree? I have seen many who really aren't. They study MBA only to get a placement from the campus with good pay. Not to become good managers. No other course provides this. You have to fight with so many in written tests, interviews to get a job. But not here. So even the very mediocre student opts to do MBA.