The abuse was so rampant that even the US has had to legislate. US Federal Trade Commission (FTC) introduced a new regulation, known as the “click to cancel” rule.
As for the darkest of dark patterns - give Adobe some money and see what happens.
Right, my rule of thumb is to stick with AppStore and when that's not an option use a Virtual card that I can just abandon if I don't want to use the service.
