I think, not supported by fact, that the offer is becoming stale after so long and hence the weakness in PPX.
Having brokers like Goldman Sachs change from HOLD to SELL, with a target of 6, doesn't help.
We are still in the opening set of a five set match; meanwhile the only certainty is that PaperlinX will continue losing money.
Concern for PPX holders is that it isn't obvious how PaperlinX can stop the bleeding.