Dark patterns are the bane of my existence.
My job has them for when people try to cancel services and I've been fighting like hell to get rid of them. But business is worried if people can cancel super easy, they'll do it. It's like they forget we have an actual quality product that people want to have. It ends up looking like an abusive relationship when a customer tries to leave. It takes one click to add service, but it takes a phone call and a transfer and a sales pitch, and then finally a scheduled deactivation at the start of your next bill cycle because God forbid we give you some money back.
I'm the exact type of customer who avoids businesses that do shit like this. And I'm not alone. If you make it 10 times harder to drop a service than you do to add a service, you should go fuck yourself. Gym memberships, monthly subscriptions, recurring monthly shipments with auto billing. Never sign up to this stuff without knowing what you need to do to deactivate. Or sign up with a preloaded visa gift card and a 10 minute email so you can just shut everything off when you leave and they can keep their bullshit account.