I'mma just leave this here. Don't mind me.
"Informed Consent -
Consent given with full knowledge of the risks involved, probable consequences, and the alternatives."
So, one could argue that by not making it obvious, or even known in most cases, to their customers that their accounts will recharge AP automatically after falling below a certain balance, they are actually charging these people without acquiring their express consent to do so. Having a box checked automatically without the person doing so or even realizing it is NOT gaining willfull consent to be charged that amount.
Do you have any idea the amount of pissed off or upset players that have been charged over $100 several times without realizing what was happening? It was a very common thing to witness in Eden Eternal, and I saw it many many times. Sorry, but if I purchase a service from a company, and they automatically charge me again without my knowledge, I'm going to be pretty upset.
It doesn't matter whether other companies do it or not. That's equivalent to jumping off a bridge and blaming the other people that jumped along with you for the reason that you did it in the first place. It's still shady and dishonest business dealings, and it basically boils down to Aeria tricking their customers in order to get more money from them.