They might be willing to issue their own crypto coins on their blockchain network and its main usage will be that 340 million active user of this giant payment processor will be able send coins to each other as mode of payment which can be again converted to fiat or any other coin backed by it.But there will be no such effective use of this centralised network crypto other than making huge profits by the PayPal only.They see crypto as fast growing market with high returns in short time and blockchain being the future technology of making payments so they are just upgrading themselves with market trend so as to keep the interest of the customers and achieving their own goal.