Considering this is Capcom we're talking about, it was only a matter of time until they started selling unfinished games. First unlock codes, then, unfinished games.

From Capcom.

"“As it happens, it was decided that the prototype version of the game we had submitted within the company would be sold as a downloadable—“Mega Man Legends 3 Prototype Version”. Furthermore, the heat and excitement surrounding this downloadable title would determine whether or not the full game could be greenlit. If hype is strong, the full title will be a go. If not, it’s a no-go. I don’t even want to think about that outcome!”

Translation: You, the consumer, are paying for the development of Mega Man Legends 3. We're Capcom. Of course we don't want to take the risk.