Let me jump in, as someone in the performance industry:
Equity performers in general are all out of work. There are barely any equity contracts currently running/productions available. All performers (union or non union) in general are just screwed everywhere, unless you are in the film industry.
So we can hate Disney for how they handled this, but it was inevitable with the current situation.
But it seems all equity performers who worked for Disney will get 1st dibs when shows start remounting ( up to end of next year), and if they don’t take it, I guarantee a thousand other equity performers desperate for work will audition for the job.
Whoever starts hiring performers back first will have a huge pool to pull from, as almost every performer is currently out of work... and will be either career changing, or holding on for live performance to continue again.
And we can speculate until the cows come home what Disney will do, will they ever have performers again? But these are unprecedented times, and we just have to wait and see... and hope.
I personally don’t see Disney just never investing in performance / atmosphere performance ever gain.