If a high percentage of their passengers go to PC, the move might make sense. From what I've read, there's a lot of Dominicans flying south. They sure won't be happy. I doubt they'll drive to PC to get a flight to Central or South America(?).
For sure a lot Dominicans wont go Punta Cana to take a flight including me, I only go to Punta Cana if I do not have options from Santo Domingo, If they left SDQ I will use Wingo, Copa and Avianca again from SDQ.
Wingo started flying to Punta Cana with cheap flights and the majority of Dominicans satayed with their departs from SDQ So moving to PUJ as I said above will have Dominicans out of statistic. for May 2024 PUJ departures with Dominicans was only 4,000 while departures with Dominicans from SDQ was 41,000. That amount do not include Dominicans living aboard.