[hiccuphippo]

One reason would be that her media business is controlled by a corporation that could ban her without notice at any moment and without reason. A decentralized network would allow her more control.

[Nextgrid]

The corporations are also making so much money off her content that banning her would be a disaster.

[robjan]

It would also be harder for her to build an audience and make money from it in the first place.