Especially for Japanese companies, you have to login the account that you have never registered in order to opt out for spam mail.
Just want to ask who taken part in these anti-human behaviors.
There is also another effect at play, a more subtle one. Say that someone at the company wants to argue that their company will make a lot of money in the future, maybe for some reason related to growth or financing or valuation. Then if they are making their revenue primarily from subscriptions rather than one-off purchases, it makes it easier to argue that they will get more revenue in the future. They can just make the projections based on no cancellations. Maybe everyone involved has some incentive for this number to be big, so they can all just assume in bad faith that there will be no cancellations and make their projections based on that number, and it gives some plausible deniability to their inflated estimates.