Her 2018 tour has not exactly been a failure:
https://en.wikipedia.org/wiki/Taylor_Swift%27s_Reputation_Stadium_Tour
She’s pretty much a nostalgia act now.
Her pre sold day of sale - sales were way down compared to previous tours. She has made her hundred million and now can just screw her fans who thought she was above it all. Rot in hell by the way how was John Mayer?