IMO, the portal has HELPED GT more than it's hurt us. Yes, we've lost some key pieces over the years (Gibbs to 'Bama, Brown to USCe, McCollum to UNC, Ivey to Ole Miss, Domineck to Arkansas, etc.), but the net result has been positive for GT (White from ODU, King from TAMU, Blalock from UGA, Seither from UGA, Scott from USCe, Eley from Maryland, Harvey from Auburn, Scaglione from Princeton, etc.). Are we 6-5 and eligible for a bowl without the guys listed currently on the roster? You can make the argument that King has been the best passing QB at GT since the Godsey/Hamilton era and one of the biggest reasons GT has had success this year.
Overall, the portal is what you make of it. Did the rich get richer? Yes to a degree. You can only play so many QBs, WRs, OLs, DLs, DBs at one time. Guys like King/Seither/Scott/Harvey/Blalock would most likely have been sitting behind other players this year. Instead, they're at GT playing starter minutes and helping turn around a program. IMO, what you'll start seeing is "middle of the road" P5 programs like GT start becoming better and moving up from their "tier".
I don't think we've seen the full affects of NIL and the Portal yet. So far it's been a net positive for GT, and there's potential for GT to be a better program is we leverage NIL/Portal the correct way.