But probably they'll earn more if they are consistent in the Finals and of course more if they win the Finals. So maybe some players prefer to stay in the PBA despite the huge offers outside because they might be assured of their security in the future rather than playing outside where a player could only get a short term contract and of course high pressure since they are one of the imports.
Aside from the salary that they are getting in the PBA, for sure they also have benefits that they are getting with the team.
I think another reason why some players are choosing to stay here is because of their family and their security like you said. There are some PBA players out there who chooses to stay with their family rather than leaving them at least they will earn money here and at the same time they are with their family and for me, nothing is better than living beside your family even though the salary is lower compare to other leagues outside PH.
Some players will also go back to the Philippines as their contracts were not renewed so not all is lost for the PBA in this scenario.
I agree with this as well.
Not all PH players in Japan will play there for the rest of their career. Most or all of them will definitely return to PH to play basketball and at that time, they also got new experiences that they got from playing outside PH which might get adopted in PBA or any other leagues. In the end, PBA will benefit somehow from these players who played abroad.