... I was under the impression that this a "free trial" type of thing, and we're all play-testers, more or less.
... Once it's all golden and perfect, he'll (Lack) probably start charging for access. A great way to build a small on-line business and let a lot of folks have some roaring fun in the bargain!
... I could be wrong, and if it's business Lack might be wisest to keep it to himself for the time being. Hell, I'd be happy to pay a few hundred yen a month for this kind of fun!