See my post #68;
The statistics are quite the opposite of what you are saying. Family Practice slots very seldom fill; If anything, there is a glut of Subspecialists - the ratio of PCP:subsp is the exact opposite in America as that of other industrialized nations - 30:70 vs. 70:30.
Very seldom fill, NOW.
I am talking about historical swings I have witnessed.
As the pendulum swings into the undesirable, people stop trying to get on it.
In the past 15 years, FP was strongly pushed, women flocked to FP, the new generation had "quality of life concerns", they cut back on OB because of liability, they cut back on hours for "lifestyle" reasons, they stopped doing inpatient care because that's why God created "Hospitalists", they wondered why they were not being paid much more than outpatient Nurse Practitioners and PA's for doing pretty much the same thing and then they bailed out of FP practices altogether to go into the Mommy Track.
I have seen it again and again and again over the last 15 years.