High schools in the state of Georgia have produced 306 NFL draft picks since 1988.
High schools in the state of Mississippi have produced 137 NFL draft picks in the same period.
So I think it's safe to say that Georgia as a state produces more than twice as much talent as Mississippi on a yearly basis. Not to mention the fact that UGA is the clear cut program of choice for in-state talent in Georgia. Georgia Tech, as a private school, can't recruit a lot of the talent in Georgia, and UGA's biggest competition probably comes from an out of state school, Auburn, for most of its in-state talent.
The situations are in no way comparable. Out of all the SEC states, Georgia produces the second most amount of talent, next to Florida obviously.
You can and should recruit solely in-state at Georgia because it's the easiest and best route. At MSU or Ole Miss, you not only have a rival that recruits on the same level as you in the state, fighting for that smaller in-state talent pool, but you have another school, LSU, that basically has a monopoly on half of the state, south Mississippi. Not to mention Auburn, UT, and Alabama coming across state lines and being able to take top talent from the state. Very few schools come into Georgia and take prospects UGA really wants.
And before you say it, no team in Mississippi will ever have that kind of monopoly on in-state talent for an extended period the way UGA does, and even if they did, they'd still be dealing with less than half the talent that Georgia can draw from in-state. If you do follow UGA's formula, and you do manage to dominate in-state recruiting the way they do, you'll still not be as talented as they are.