I'm not sure I like this idea. Braintree is a legit competitor to Stripe. I'm guessing they have some informal agreement to keep transaction fees about the same but if they become 1 company, what's to stop Stripe from raising fees even more?

I'm not a fan of either to be honest, PayPal once told me I was wrong with something related to taxes and a bunch of different reps told me what I was saying and reported was impossible. Their tax division specialists also replied by email with big bold red letters outlining how it's not possible and that I'm wrong multiple times. They were contacted through support cases I opened with other reps on the phone since they aren't directly accessible on phone.

Then I said I was canceling my account with them if this wasn't resolved since it would have resulted in me needing to pay $400 to have my taxes amended. Long story short, after being ghosted for 3 months they replied to me saying I was right and they indeed had the impossible problem, then fixed their tax forms a week before taxes were due.

It's really bad that a random person on the internet discovered a huge issue with one of their partners and their instinct was to require ~10 hours of back and forth phone calls, multiple emails, me giving them the likely problem and solution on day 1 only to be lead on and ignored for months until the very last second.