My understanding from people here and elsewhere is that they couldn’t even turn it on right now if they wanted to. But they don’t want to. Although I would think the IT work to copy paste a duplicate system would be undertakable.
Of course they could replicate the system. But it’s not as simple as clicking an icon.
They would need to build a new SQL database, since park pass is using the old data base. (or whatever type of database they are using)
They would need to re-program the websites and apps to accommodate both park pass and FP.
They would have to make FP and PP compatible with each other. (That alone would take a lot of debugging).
If rumors are true that they wanted to get rid of FP+ anyway, no reason to invest all that effort just to bring it back temporarily.