Re: Wishful thinking...
Given the billions that have been committed to James Webb Telescope I rather fear that anything that is going to replace Hubble is unlikely. Maybe there is space for a private replacement but then there will be all the issues of access, is it paid for etc, etc.
Maybe a philanthropic mission to repair it would be possible but it needs the agreement of NASA and if NASA decide to write Hubble off because of its age there is little to be done.
Hubble is an amazing resource that has produced not only some incredible science but also images from space that have captivated the general public.
I hope they are able to fix it but I think as time passes the outlook is not optimistic.