If it's harder to leave than it is to join, then I'm not using your stuff. It's mildly condescending and very transparent and so I don't want/need to deal with it. If you believed in your product, you wouldn't do it. I subscribed to the New York Times with a simple one-step "put in your credit card deets". One year later I was going to leave the country so tried to cancel it. After several steps of forms you get the…
A little while ago, I noticed the dark pattern that dropbox uses and showed it to my friend while talking about dark patterns. Turns out he was in charge of his university for selecting a good vendor for file storage. He saw it and immediately said 'fuck that' and went for another vendor instead. You see, this is how dark patterns shoot you in the foot - the cost of trust and transparency is even higher. In this case, dropbox lost significant money that they could have otherwise won.
Besides, In this day and age, there is literally no value that dropbox offers to its users. Their competitors offer way more value for similar price points and the experience with dropbox isn't even that good. All they have is their brand name, which will also be gone soon after they've tortured their customers with these dark patterns.