Talk:Tutorial: How to Register/@comment-63.140.101.33-20150222174801/@comment-24155103-20150222181352

Simple answer: Money.

Both Candy Crush and WoW make enormous profits. As for Kancolle? The last time they reported (mind you, that was almost a year ago), the game itself was running at a loss (or barely making it, I can't really remember). Allowing more, non/low-paying, users to join the game probably isn't a big priority for them.