Doubt it. Here are some points:
1) it's common theory that PPV points start at 500k.
2) Recently the only PPV's that have hit that mark are Jones, Conor, Bisping v GSP, Rousey v Nunes, and Tate v Nunes.
*
Of those, only Nunes will be hurt. Because casuals will get ESPN+ to watch Jones or Conor. IMO.
And you know what? Most will end up keeping ESPN+. Also IMO. That's ESPN's gamble, and having used it the last few months, I think their gamble will pay off.
*my source for PPV buys is
this, then I copied the data into excel then sorted by date. And by "recently" (in point #2) I went back 2015. So I didn't include Rousey v Holm, which was Nov 2015. Sounds complicated but it only too about 3 minutes.