That is why I love Google constantly learning everyday "underwater basket weaving".
I suppose in life we make choices some do extensive research others go with interest, passion, gut feeling.
It does help to do certain subjects but then again even that is not enough to land a job nowadays. There is a lot more than a degree, in my opinion the value of a degree has declined slightly as it seems everyone has it so experience also plays a important part to securing employment.
But I guess some that do those subjects you describe get jobs as well I met a guy who studied sport at university and now works for ITV so there are other factors to take into consideration.