SWBKCB, have you ever driven down the A453 in peak hours (or attempted to?) - also the M1 roundabout near the airport is notorious for bottlenecks with long queues to/from EMA (Friday after about 2 pm is a nightmare!).
You can say same about the M6/M42 at BHX and M4/M25 at LHR. I was making the point that is it really local access that is the reason why EMA doesn't have more 'business' routes? I think it's more likely that there isn't sufficient demand for airlines to make money.