Until the value of Bitcoin is more stable and technology illiterate people start to use it, there is no way that something like this can replace PayPal.
Paypal is also an entity with a head office, where the people involved in creating it are widely known. Although you might disagree with their policies or ethics, at least they're a legitimate concern.
Bitcoin was created by "some guy" that, if anybody knows them, nobody's talking. Illegal, underground money lenders are more above-board than this.
There is no way Bitcoin will ever displace Paypal without serious, fundamental changes.