The PFL's Multiple Demonstrations of Making a Run to Establish Themselves as the Official Number Two

Do you think the UFC is phased at all by the PFL's multiple demonstrations of clearly making a run to at least establish themselves as the official number two? If so, what kind of tactics do you think they may resort to. Do I think that they're like losing sleep at night over PFL trying to do this? Probably not. They've been here before. There's been times where there were multiple different things going on that they were up against and they were the ones that lasted.