MX and Finicity both have OAuths to like 80+% of the top 20 financial institutions. There's a reason Plaid doesn't want people switching to them and it's hella sus
Plaid used oauth for Bank of America circa 2019 when I tried, and currently uses Capital One's oauth when I try to log into it. I'm sure they use it when it's convenience (or maybe when the financial institution mandates it).
Why can’t the reason be “losing their only source of revenue to a competitor”? That seems like a fine reason to not want people to switch