Which is pretty much what I said.
I don't know about a bunch of players from Oklahoma, Unless I missed someone, Riley brought 3. Although 2 of them were pretty important. lol
If the portal stays as it is, other teams will be able to perform a quick turnaround. Maybe not quite as fast or as much in one off season as it looks like USC has, but faster than just pure recruiting.
A big part of USC's success in the portal was some really good timing. They are a blue blood who was trying to get back to prominence and they hired a top 5 coach. There was also a lot of talent in the portal.
The problem if a team is trying to depend on the portal too much is that much like free agency in professional sports, the level of talent will not be consistent. Even this past off season, I think part of why there was a lot of talent in the portal was what went on at USC.
USC had several very good players enter the portal (Kedon Slovis, Jaxson Dart and Bru McCoy among others) either before Riley was hired or when they learned there wasn't a role for them. Then there were a few from other schools who entered specifically to transfer to USC and likely aren't in the portal otherwise.
Won't always have that type of situation feeding the portal.