Major recent examples that spring to mind are the Wikileaks and OnlyFans bans.

To be clear, it is not finance companies that have morals (which seems silly to even have to say) but rather government, specifically conservative state governments, that go on moral crusades of varying degrees of earnestness to shut down sex stuff they don't like.

CapitalOne told me the reason I can’t use my debit card for the Virginia state lottery, or for any of the numerous betting sites, was because of MasterCard.