So apparently there are no politics or access issues involved with cardiology.
What you probably mean is that you don't understand the hospital market and couldn't sell anything without an office lunch feeding 30 office cows and 1 doctor. (if you are lucky)
What world do you live in? What if, hypothetically speaking, the cath lab is in the hospital? Where are you seeing your cardiologist? Oh yeah, the CVI hospital rep can get you in.