Earlier quoted context omitted.
If only PayPal had joined Braintree's "Credit Card Data Portability" initiative [1]. I'm betting that's dead now with them joining PayPal, if it's even still active. If it is, get your data out quick before PayPal can lock it in! [1]: https://www.braintreepayments.com/blog/open-letter-to-the-ce...
I'm somewhat annoyed that they do not publish the list of providers who have joined this initiative [1]. [1] http://www.portabilitystandard.org/ (FAQ Q #1)
Looks like (unconfirmed list): fusebill, atpay, braintree, recurly, chargebee, app55, uberglobal