It's sometimes occurred to me—and I want to make it clear that this is just my personal speculation (and also clarify that I don't work at Itch)—that these scam companies might be reporting the original games so they get taken down, allowing them to appear as the legitimate game owners.
If they use bots, they could file multiple reports against a legitimate game, which would likely be reviewed faster because there are so many "users" reporting it.
When Itch removes the original game from its index, they upload a fraudulent copy. That way, if someone searches for the game, they'll only find the fake copy.
I want to emphasize again that this is just my speculation; I don't work at Itch and I don't know how they operate internally. But seeing how long it takes Itch's staff to process these reports, I think what I'm suggesting could be feasible.
Please note that this forum is not answered by staff, so my recommendation is that you contact support and politely ask the moderator, using your ticket number, to inform the administrator of your problem.