If Vimeo has no value-add, then that's what people should be doing. It's not like Vimeo is a platform for content discovery like YouTube so it should be no problem for anyone to switch.
It's what everybody will start doing. This will be bane of Vimeo. You must realize most of the cinematographers or people in creative industry don't even know about alternatives. Vimeo had great MOAT exactly because they were "youtube for creatives".
Also services like cloudflare stream/bunnycdn stream/mux are fairly recent.
Another issue is reuploading of all the media. It's not that easy to switch. But people will flee to some other solutions.
It's basically a fact that she's underpaying for what she's using. That she gets no value out of the service isn't the fault of the service, she's just literally not using the service. Since that's the case she shouldn't use the service and use a different service that actually does what she wants and has the correct value proposition for her. It sounds like that's exactly what's happening and there's no problem anywhere. There's lots of comments here pitying vimeo for losing "customers" like her but err, vimeo's the one kicking her out. She gets on a service that's more appropriate for her, vimeo gets rid of a money losing customer. Everyone wins.
Also services like cloudflare stream/bunnycdn stream/mux are fairly recent.
Another issue is reuploading of all the media. It's not that easy to switch. But people will flee to some other solutions.