What I would do is pay people to set up phoney accounts at bitcointalk.org and post disparaging threads about how bitcoin will fail and how only official bank sanctioned money can save you.
bitcoin has less population than dollars, bitcoin has less population then yuan. so i do not think that bitcoin will supersede fiat soon.
after all bitcoin is another currency that can easily work alongside fiat without need to supersede all 200 different fiat currencies.
but paypal can make fee's on allowing people to convert fiat to bitcoin via paypal, at just a 1-2% spot premium. whilst still allowing both fiat and bitcoin merchants to advertise and sell products at a 1-2% ad fee.
in short, its delusional for anyone to think that paypal is hesitant because they fear bitcoin. they are simply holding back until some *cough* regulations *cough* give them a safety net to trade bitcoins whilst becoming less liable