Cool is not a reason to spend billions on research and experiments. Also, think of the feeding cost for a few of those beasts, not to mention stabling and the like.

Beside it's entirely likely some super-rich madman could do the exact same thing and then we'd have dinosaur without the billions spent of our R&D money.

[Phil frowns slightly then motions for Clint to come over.

From underneath the short table he's sitting at Phil withdraws a hot water bottle. He'd been using it because of the chill that had settled deep in his bones and chest but warming up Clint's hands is more important than his own mild discomfort.]

This might help.