It's not impossible that some swing state would get a blue-leaning legislature to pass the NPVIC. That would cost the state some attention for the benefit of a better chance in close elections at the top.

Twice in the past two decades, the Electoral College has gone red when the popular vote would have gone blue, by a nontrivial margin. That leaves an avenue open whereby some state's legislators fall on their swords to fix that problem.

Whether it would stick is an open question -- they'd almost certainly face an angry campaign against them, and the swing back could undo it. So it's unlikely. But there is a route by which it could happen, since the state's benefit from the EC is mitigated by the distortion it causes.