"Our rights with Tatsunoko have lapsed fairly recently (so we're no longer allowed to sell the title physically or digitally)," said Capcom Senior Vice President Christian Svenson. "Unless Japan were to strike a new deal, I'd say the chances of this happening are slim."
Overlooked compared to Capcom's other crossover fighters such as Marvel vs. Capcom 3 and Street Fighter x Tekken, Tatsunoko vs. Capcom was still a great fighter in its own right. And with Capcom losing the rights to sell it, it just became a lot more valuable. Better hit up Amazon and eBay fast!