@curatorcat is exactly right. Rather than buying accounts, you get other people to each make a single account. So all of those real people who make accounts are technically not doing anything wrong, and probably none of them knew they were contributing to anything negative. I think you don't get the delegation when you pay for a second (or more) account, but you do when it is your first account. So, technically, all of those were the first accounts for those people, so they got the usual delegation.