their one benefit - ubiquity - isn't even earned. no, they were just early to the scene 20 years ago, then held their nerve until about 2010 after which the major online players pretty much haven't changed. fuck the current online eco[nomic]-system. the network effects of familiarity nearly always trump competence or quality
my advice: never ever have money in your account. it's just too tempting for them. if you're taking payments, auto-transfer them out. if you use it pay for things, use it via a card. since I realised this, I've not once had to unlock my account, no unsolicited two-factor, not even a dodgy notification. it's almost like they have nothing to gain from locking it anymore :o
Braintree might have been decent as a startup/small player, but getting pushed to the same stage as Stripe make them look struggling IMO.
Used to interface with Adyen and Stripe in the past, and PayPal's Braintree part is way laggier and prone to errors.